i am working on 71 b-body. there is a great post in archeives about 6.1 swap into an ebody. small block tranny will work, just need washers to adapt flex plate to converter. But don't forget about all of the little things that add up$$. fuel system, radiator outlets, guages, and that price seems a little low for wiring to run injectors. I am still working on mine, and there is a bit of tuning. It runs strong, but no times yet.