GM LS & Gen-V LT engines make great power and are ideal for engine swaps in the 1963-67 GM C10 Trucks. Hooker BlackHeart application-specific LS/LT swap engine mounting brackets remove the installation guesswork and compatibility uncertainty that comes with using universal/adjustable swap plates. These brackets are designed for 1963-1967 GM C10 pick-ups to achieve optimized component clearances and drivetrain/U-joint operation angles when used in conjunction with 71222024HKR, 71222024HKR-1, or 71222024HKR-2 transmission crossmember and Hooker cast exhaust manifolds and dual exhaust systems co-developed for this application. These motor mounting brackets fit both the LS & LT engines, and allow a future engine upgrade by changing the clamshell that attaches to the engine (when upgrading from LS to LT engine). These brackets are for use on trucks with the wide style frame rails (see photo below to identify if you have the wide or narrow frame rails). Features: Engine Swap Mounting Brackets for GM LS or Gen-V LT in 1963-1967 GM C10 2-Wheel Drive Trucks Welded Steel Construction w/ Black Finish – Light Weight, Rigid & Clean Appearance Black Coating for Durability & Corrosion Resistance Includes Mounts, Instructions & Mounting Bolts Use with 4th Gen GM F-Body Style Clamshell Engine Mounts LS Engines Use 71221018HKR Clamshells, 71221016HKR (Black) or 71221017HKR (Red) Polyurethane Inserts & 71223015HKR through bolts (Red) Polyurethane Inserts & 71223015HKR through bolts Gen-V LT Engines use 71221019HKR Clamshells (along w/ the same polyurethane inserts & through bolts – shown above) Compatible Oil Pans: LS Swap Pans 302-2, or 302-3 & Gen-V LT Swap Pan 302-20 Fits Trucks w/ Wide Frame Rails (see photo to identify which style frame rail you have) Use These Mounts with Crossmember 71222024HKR (T56 or T56 Magnum), 71222024HKR-1 (4L80E, TH400), or 71222024HKR-2 (4L60E, 6L80, 700R4, TH3 Applications 1963 - 1967 Chevrolet C10 Pickup 1963 Chevrolet C20 Pickup 1967 GMC C15/C1500 Pickup Specs Brand Hooker BlackHeart Emission Code 5 Finish Black Powdercoated Motor Type GM LS/LT Product Type Engine Mounts Transmission 4L60E 4L80E 6L80 700R4 T56 GM T56 Magnum TH350 TH400 Type of Component Engine Mount Brackets Part Number BHS538