Has anybody used the standard steel wheels for a COPO, and if so did you go 14x7 in front and 15x7 in the rear? Could you fit a 15x8 rim in a standard wheel well? Also do the polyglass tires hook up off the line with a standard 12 bolt multi-leaf rear end? Seems like they would just spin. Any suggestions on a good set of tires for general purpose driving and occasional street race?