Availability
Radiator/Fan Shroud Combo, LS Swap, Crossflow, Dual-Row, Aluminum, Natural, Transmission Cooler, 33.25 in. Wide, 19.00 in. High, 3.00 in. Thick, Kit
Part Number: SUM-381444-KIT1
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust System, Header-Back, 2.50 inch, Split Rear, Steel, Aluminized, Buick, Chevy, Oldsmobile, Pontiac, V8
Part Number: SUM-680121
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, TH200/TH350/M-21/M-22/Powerglide/Saginaw/Super T-10, Each
Part Number: SUM-770300
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Radiator/Fan Shroud Combo, LS Swap, Crossflow, Dual-Row, Aluminum, Natural, Transmission Cooler, 31.25 in. Wide, 18.62 in. High, 3.00 in.Thick, Kit
Part Number: SUM-381446-KIT1
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust, Header-Back, 3 in., Steel, Aluminized, Buick, Chevy, Oldsmobile, Pontiac, Kit
Part Number: SUM-680122-NM
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, 700R4/T-5/4L60, Each
Part Number: SUM-770301
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust System, Header-Back, 2.25 inch, Split Rear, Steel, Aluminized, Buick, Chevy, Oldsmobile, Pontiac, V8
Part Number: SUM-680120
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust System, Header-Back, 2.50 inch, 409 Stainless Steel, Buick, Chevy, Oldsmobile, Pontiac, Kit
Part Number: SUM-680121-SS
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Transmission Crossmember, Steel, Black Powdercoated, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each
Part Number: SUM-770338
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Transmission Crossmember, Steel, Black Powdercoated, Channel Frame Only, 200-4R, TH400, Each
Part Number: SUM-770335
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, G-Body, 4L80E, Each
Part Number: SUM-770324
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, TH350, Powerglide, Muncie, Chevy, B-Body, Each
Part Number: SUM-770354
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, A-Body, TH400/ 200-4R, Each
Part Number: SUM-770322
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust System, Header-Back, 2.50 inch, Split Rear, Steel, Aluminized, Buick, Chevy, Oldsmobile, Pontiac, V8
Part Number: SUM-680131
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Steel, Black, GM, TH400, Includes SUM-770307, Each
Part Number: SUM-770303
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Lightweight, Steel, GM, 78-88 G-Body, Using 700R4, 4L60E, or T5 manual, Each
Part Number: SUM-770391
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Transmission Crossmember, Steel, Black Powdercoated, Boxed Frame Only, 4L80E, 4L85E, Each
Part Number: SUM-770339
Estimated Ship Date: Mar 3, 2026 if ordered today
Estimated Ship Date: Mar 3, 2026 if ordered today
Crossmember, Transmission, Steel, Black, TH400, 200-4R, Each
Part Number: SUM-770302
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Crossmember, Transmission, Lightweight, Steel, GM,78-88 G-Body using TH400 w/Short Tailshaft or 200-4R, Each
Part Number: SUM-770392
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each
Part Number: SUM-770560
Not Yet Reviewed
Estimated Ship Date: Mar 3, 2026 if ordered today
Estimated Ship Date: Mar 3, 2026 if ordered today
Exhaust System, Header-Back, 2.25 inch, Split Rear, Steel, Aluminized, Buick, Chevy, Oldsmobile, Pontiac, V8
Part Number: SUM-680130
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Exhaust System, Header-Back, 2.50 inch, 409 Stainless Steel, Buick, Chevy, Oldsmobile, Pontiac, Kit
Part Number: SUM-680131-SS
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Transmission Crossmembers, Steel, Black Powdercoated, Hardtop Models Only, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, 4L80E, 4L85E, Each
Part Number: SUM-770284
Estimated Ship Date: Mar 3, 2026 if ordered today
Estimated Ship Date: Mar 3, 2026 if ordered today
Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each
Part Number: SUM-770559
Estimated Ship Date: Mar 3, 2026 if ordered today
Estimated Ship Date: Mar 3, 2026 if ordered today
Transmission Crossmembers, Steel, Black Powdercoated, Frame Extension, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, 4L80E, 4L85E, Each
Part Number: SUM-770286
Not Yet Reviewed
Estimated Ship Date: Mar 3, 2026 if ordered today
Estimated Ship Date: Mar 3, 2026 if ordered today
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