Not to beat a dead horse, but I'm looking to swap my SM420 with an early model GM NV4500. Also, I already have a early 80's 350 sbc installed. The tranny comes with SBC bellhousing, inspection plate, clutch fork and shift lever. I know I'll have to shorten the driveline and move the trans crossmember. Question is, is there any thing else that I'll need to do/purchase? Any guidance is appreciated. Thanks!