Thanks 72bluNblu, I will be running 255/60/15's on the back. My car has a fairly high stance so that shouldn't be a factor. Plus I was running 15X8 sbp Cragar SS that have 4 1/8 -1/4 backspace, need to get a better measurement on them. Just don't want to go through the swap and end up with wheels that wouldn't work. Kinda like check, re-check and drive myself crazy, LOL.