Its time to order wheels for my 72 Swinger. It has an 8 1/4 BBP with 73 disks in front. I have QA1 tubular control arms and the rest is stock. I have been looking at 215/50/17 in front and 245/45/17 in back. Will these fit without any modifications? I have been thinking 8" bullet wheels with 30 backspace.