I am running a 68 dart gt with a 8 3/4 rear end with super stock springs. I have a brand new set of 14x7 sbp cragar s/s wheels. I need to desperately find out what size tires I can run under my car without any modifications to the body, offset shackles, etc. nothing at all no modifications. the cragars are regular stock offset sbp. I have asked this on here before and got 100 different answers. I know that there is someone on here that can nail it dead on. as always I look to my mopar family for their help and understanding. there is so much knowledge here on this board that I know there is someone that can answer this. I hope I am not asking for too much. thanks brian