Yep that's them. I remember a few on here actually found a set.

 

Somebody reported that PT Cruiser wheels and some Toyota wheels fit.

 

I think it was the Dart, not the PT.

 

PT was a 5X100 bolt pattern, Dart 5X110.

 

The only real downside to my SS that I can think of. Have 18s on the Mustang too and they are NOT cheap.
Glad the ones that were on the car have lots of tread. I should be several months before needing new ones.
The 16s on the LT were so cheap I was amazed. Forgot how cheap they were.

 

 

If you're asking about the one in the picture I posted(post #10), I did a search and found this at gmpartsdirect: part #19301374
Just be prepared for sticker shock if pricing new ones.

 

Also found this picture in an old thread from 2007. Seems to be those same rims in some sort of GM ad.