Fits 1987 Chevrolet C15; Hooker Blackheart Transmission Crossmember - BHS548

These new crossmembers have been redesigned and are less expensive than the previous crossmember & work with engine mounting brackets BHS540 for both the GM LS & Gen-V LT engines. Choose the crossmember based on the transmissions that you want to run in your 1973-1987 C10: ? Crossmember BHS548 fits 4L60E, 4L65E, 4L70E, 4L75E, and 6L80 Transmissions ? Crossmember BHS549 fits 4L80E, and 4L85E Transmissions ? Crossmember BHS550 fits T56, and T56 Magnum Transmissions These crossmembers, when used with BHS540, provide the ideal u-joint angles and the best clearance for 3.00" dual exhaust.Features: Revised Design with Lower Pricing Fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD & 1973-1982 Blazer/Jimmy 2WD LS/Gen-V LT Swap Transmission Crossmembers Designed for Use with All 1973-1987 C10 LS/Gen-V LT Swap Components Use with BHS540 Engine Mounting Brackets (Also Works with 12621HKR) Designed Using CAD Modeling/FEA Analysis for Optimal Strength, Weight, Safety & Appearance W