building a mild Daily driver 318

I have used (and will be using again :D ) B-body 8 3/4 rear ends. I prefer 1965 cause they are a little narrower than the 66-70's, but all work just fine. I do NOT move the perches, I oval the hole in the perch in about 1/4 to 1/2 inch (equal both sides). Bolts right in and gets rid of the "sunken in look" of the back wheels on dusters...lol ! Oh, by the way, the 7 1/4 will take some abuse with the 318. In fact, I've never broke one in the time before switching it out.