Howdy, Will 18x8s with 4.5 in backspacing fit in the wheelwells of a 65 Riviera GS? They are on eBay and come with 235/50ZR18 BF Goodridge g-force T/A Radials. It doesn't seem like a bad deal but will they fit? If they won't fit, how big can I fit on a stock 15x6 and how big on a set of 15x7s if I get the set from Topcat he's talked about in the parts for sale under the 15x10 posting? Thanks,
