C4 16x9.5in info

I did a search and came up empty. Looking for info on these wheels to see if they will fit the 4th gen. Anyone know backspacing or offset on these? Anyone using them?

This source shows them as:

Corvette 84-87 16x9.5 - 38mm offset - 6.6" backspace

http://www.skulte.com/adapterfaq.html

That would put them just under the rear fender, and possibly a bit outside the front fender of a 4th Gen.