Hello mike. I was just reading some old posts and came across one on you commenting on some rim/ tire sizes. I have a 75 dart and just put the off set shackle kit in from mopar. I had not measured for rims cause the rear is out cause I'm setting my pinion angle. I plan on cutting my fender lips and clean up inside a bit where the tires could rub. And now I'm gone to work and need to order rims / tires as the strip is now open where I live. Sorry to ramble on but my question to you is how did your 255 60 15 tires fit for you. And did the 5 " back spacing centre the rim from your rolled fender wells to the springs after the shackle kit. My rear end is a body 8 3/4 with big bolt pattern conversion . I plan on running some quick time pro Hoosier. They are 27 10.5 15. Thanks in advance on your reply. Appreciate it . Nice car by the way. The 68 and 69 are getting hard to find.