I have seen them on also. Here is some info on them:
My charts show the C5 wheels as:
Front 17 x 8.5" 58mm offset
Rear 18 x 9.5" 65mm offset
Both of those would fit without spacers, but will sit sort of deep in the wheel wells. If you can confirm the exact size and offset of the wheels you are looking at, and tell me how close to the outer edge of the fenders you want them, I could recommend a spacer.
Note than on the 93-96 F-Bodys, the rear axle hubs are slightly larger in diameter than the front hubs. As a result, when you put many late model wheels on them, including the Corvette wheels, you may have to lightly sand/grind the inside diameter of the hub hole on the rear wheels to get them to fit. Spacers would obviously eliminate that problem.
BUT, note that they also make Corvette Style wheels that fit Firebirds, here is a link:
http://www.lakeshorewheelandtire.com...6-silver.shtml
Corvette Store
C5 thinspokes on an F-body?
All black of course - with a 6 speed...those are some mean looking cars.
C5, Nassau Blue, 6M, lowered, B&B Bullets, MAF, Dual Cone Intake, Corbeaus,18/19 Lightning wheels, Z06 brake scoops - sold
