I also have a 69 Dart 340 Swinger. I also have the small bolt pattern and stock wheel wells. I have 15x7 with a 245/60/15. The steel wheels were ordered from wheel vintiques with a 4 1/4 back space. Took a while to get them, but it's centered between the wheel well and the leaf spring. Can't get a finger between the the springs or wheel well.