I have a 727 long tail ( I was told,it came with 73 scamp when I bought it) and a friend of mine found a motor home with a 360 4 barrel and 727 short tail he says is correct for my car. But he is also the guy I sent to pick up a 8 1/4 rear end showed up with 7 1/4 lucky for the guy that ripped me of for it.