How about the new guy tries to help out here?
I work very close with VB&P. They use my vette on most of their magazine print ads. I worked with them and Tony Huntimer to get the right BS for my 1st gen Camaro with C5 wheels.
The ZR1 wheel is 11" in the rear and is going to give you a fit on a stock rear wheel house. You can fit the C5 wheels, but it is super tight. You want to run a 2" in the front and a 2.5" in the rear. In my case I had the 9" built with the 2.5" on each side added so no rear spacer needed.
Here is what the spacer on the front looks like. I think it actually looks very natural behind the rim once it is all bolted up: