Well i got it...

NYSpeed Automotive
31

crateenginedepot.com

http://www.crateenginedepot.com/store/Cobalt-G5-Performance-Parts-C144.aspx?UserID=3263400&SessionID=n8FwQF8liIQsjRfOhI4W

for the stage kits you may want to look on ebay. i got my stage 2 for 350 on ebay. then installed at westherr chevy in hamburg for 250.