I filed a spot on frame with a plumb bob lined up with the old rear. This made placement of the 10 bolt replacement easier, but still wasn't happy with the location after installing bed and fenders. I wound up moving it back 1 1/2" to center the wheel in fender opening. Cost me a drive shaft. So my sugestion is plane ahead, the AD had the rear a little forward originally. It propably would have flown, but I knew it was off and like Chuck said with his front end it would have laughed at me every time I looked. Zeke
