What width rear end and axles are you using or are you using the stock 1965 8 3/4 width rear end? It does make a difference If your using a stock width 1965 rear end and the leaf springs are move into the sub frame 5 or 5.5 inch on the back side on a ten inch rim or a 6 or 6.5 inch on a twelve inch rim works well If not a stock rear end