I did it!! 325's on the rear of the 65 dart(barely)

gtmopar,if you have a stock width A-body 8 3/4(52 5/8 housing end to end)with a 10 inch rim you will need 7.5 b.s.Rims are hard to find with this b.spacing,atleast 15 inch.This is why I had my rears narrowed for wider rims.Hope this helps some.:D
Early-A,s Rule!