Also try AFS Wheels.
www.afswheels.com They have ZR-1 style wheels with the proper 38mm offset for 84-87 cars. They offer wheels in silver, polished aluminum, chrome and black (GS type ) wheels in both 9.5 and 11 inch widths. They also sell wheel and tire packages.
They also sell "blemished" wheels for a lot less. I bought a set of the black ZR-1 blemished wheels and out of the 4 I bought, only 1 wheel had a very minor powdercoat blemish on the inside of the rim. Otherwise they were perfect. Saved about $300 on the deal!
AFS also puts wheels and tire packages on eBay occasionally. Do a search on "AFS Wheels" or "Corvette wheels".