If I was doing one, I would start with a short tail shaft 727 or replace the output shaft in mine with a short one and get the "Shorty" GV kit.
Kevin
I tried this on my 70 challenger and the GV would have clobbered the trans x-member and would have needed more extensive modifications I was not willing to do so I went back to the original style.
Now if I were to do it again, I would look into converting to a A-518/46RH. May have to run a conversion bell for a big block but worth the effort. I think I have seen where the tails haft was ground down to clear with less modifications to the car undercarriage for clean install.
AG.
