727 questions

I have a 727 still on the pallet as shipped from Chrysler, was told it was for a 70 cuda, ordered over the counter in case they wanted to run auto instead of 4 speed, # pk 4028425 5758 1907 , if anyone could help me identify this I would appreciate the help, and maybe someone could give me an idea what I should ask for it, thanks in advance,jb.