mopardude318 on the front of my 68 cuda, I have 17x8 with 5.72 backspace with a 3/8" spacer, with a factory 73-up disc brake kit.
on that '70 dart^^ I have 17x8 with 5.75" backspace with NO spacer but it has an RMS AlterKation front end with wilwood disc brakes...both cars have a 245/45/17 front tire.