Good luck, very hard to find. Check g8board. The only car I've owned I truly miss. I had an issue with a low speed vibration, very annoying, dealer wouldn't do anything.
If you want the best, ;-)
http://www.g8board.com/forums/showthread.php?t=80593
Guarantee MSRP? I'd expect to see "LOA" on every sticker out there at first. Unless of course GM says the dealers can't do that. I recall hearing Wellburn mention that it will be a limited production run at first as well.
By the way..."Dat Ass!" The rear end is sick and I even kinda like the contrast of the round pipes.
I'll be putting my deposit down on the new SS...