Here's my piece. I'll get it painted one of these days.
18x11 Ace slick wheels, 56mm offset. 315 30 18 Perellis. I can fit my fingers between the wheel and the knuckle. The fronts are stacked on top of a small spacer for the Porsche rotor. A very thin spacer would be required to run this offset with stock or C5 brakes.

 

Nice job... fits like a glove.

 

where did you get the wheels from? how do the rears fit? i was trying to do the math to figure the fitment but I cant think this early. the 18x11 315/30 combo is what I wanna run on my rears

 

NICE! What do the center caps look like?

 

they're just plain center caps nothing flashy, the offset is 56mm I believe and the rears fit with no more mods than is generally required for a 315 in 17in. Got the wheels at the Corvette Garage

 

nice job. looks very good.