We have a 1995 3/4 ton 4-wheel drive standard transmission. How hard would it be to swap in a 1998 vortec engine it has an automatic but we want to stick with the standard already in the truck. If we stick with the 95 TBI Manifold will the distributer and Manifold bolt to the Vortec? Electronics? fuel Pump? Drill the block for clutch linkage?