These are the adapters that allow any fourth gen/vette wheel to be bolted up. I think they are the 2" / 1.5" adapters. but im not sure, I ran 17x11 zr1's on my iroc just fine with these.
I can measure if anyone wants assurance.
$150 shipped.
there is one broken stud I will replace before shipping. otherwise, they are perfectly fine, just a bit dirty, ill clean them if it helps the sale lol.

 

Sold and shipped, sorry folks!