I have an sm420, bell housing, flywwheel and other goods from a 67 truck. I have a 4.3 v6 out of a 1990 astro. Will these work together? If not what will I need? Thanks!:confused:

as long as that bell housing was bolted to a 90 degree chevy v8 it should work.you will have to put a crankshaft bearing or bushing in for the trany input shaft.go onto novak adapters site there's alot of info on there.