They are D2Forged... Rear is 22 x 11" w/ 315/25 PZeros, Front is 22 x 9" w/ 265. The D2 offsets are perfect.. if you noticed on Jeremiahs car the tires stuck out and were rubbing for 2 reasons. Tires were too tall and rims didn't have proper offset and those were expensive wheels.
I have BMR 1" lowering springs and front and rear sway bars... got them all for $225 at C5Fest. Trailing arms are next for me.
Nine Ball - Tony lives about 5 miles from me and is a dealer for all types of forged wheels. He won't steer you wrong and will even mount and balance them for you in his shop. I probably would have gone with a different style too if I hadn't gotten such a good deal from him and Derrick at D2 on this set.
Here's a great thread from Tony on sizes.. If you notice my heights are almost the same as stock.
http://www.camaro5.com/forums/showthread.php?t=62838