1963-1967 GM C10 trucks LS Swap Kit, 4L80E, TH400 Transmission - Wide Frame Rails. Holley has taken the guesswork out of picking the right parts needed to swap your GM muscle car or truck with our Swap Essentials Packages. Depending on your budget, there's multiple levels to choose from; engine and transmission mount packages to full mount, exhaust, and front accessory drive packages, with savings stack along the way. Take the hassle out of your next swap with Holley's Swap Essentials Packages!. 1967 C10's came in both a 1.75" "narrow" frame rail configuration, and a 2.375" "wide" frame rail configuration. To determine which version you have, measure the frame width at the crossmember area where the engine mount bolts in. "Narrow" frame 1967 C10s will use kit number SE1-C106772-LSX-A1, A2,.
