I'm trying to pin down costs on a potential engine & tranny swap for a 1971 4 speed car with a shift console. The car presently has a 350 small block. I'll just do the engine of it requires any drilling or cutting. Probably go with the blueprint 383 (430/450). Like the warranty and don't have any experience to draw upon to put one together myself. Also plan to keep the existing 3.73posi rear end. I've heard a lot about the Tremec TKO five. The top gear would be a heck of an improvement over the 1:1. Is there a kit that would not require perminant mods but still place the shifter where it needs to be? I figured several folks have already done this upgrade.... Based on what I've read on the site already, I'll probably have to shorten the driveshaft. I can live with that, if necessary. Also noticed most of these have a lower 1st gear. Curious about the trade offs there as well as R's at highway speeds. Thanks!