Not sure about the backspacing, etc., but here's a pic for you to compare - these are 15x7 ralleys with 225/60/15's on the front and 245/60/15's on the back, hotchkis suspension (will probably settle more, suspension was new and not a lot of weight in the car). I went with 225/60's on the front because I thought the 235/60's would look too big with the lower stance, and might rub. Now I'm thinking the 225's look a bit too small. I think on a 15x8 inch rim a 235/60 would be perfect on the front of a first gen camaro with a lowered stance. I'm in the same boat as you, these ralleys are temporary until I get everything else done and the car actually on the road, then I'll upgrade to 17's (probably Vintage Wheel Works V45's)