Re: Big Brakes
I'd think 17" wheels would fit given the correct wheel design, probably not a cast wheel, but a multi-piece wheel should work. A flat barrel where the center section/spokes connect to the rim will help with clearance. Many cast wheels are flared up/thicker near the center of the barrel where the spokes meet the rim and this causes interference issues with the caliper so you'd have to be judicious in your selection if you want to use 17' wheels. You may be able to fit a 17" cast wheel, but may need to use a narrow spacer. I doubt 16" would fit, but 18's should fit for sure. Hopefully, others here may be able to provide direct experience in what will fit with your Wilwoods.
'69 Z/28, Lemans Blue/White Stripes, DZ302, Tremec Magnum, 4.10, Procar Elite Seats,
Custom Upholstery, Dynatech headers, 17" VWW V45's, 235/45, 275/40, C5 Front Brakes