Just want to give another thank you to bill boost on that last min.. hey u wanna mod my car today. the man knows his stuff. done in a few hours and i picked it up the next day. 2004 Comp G runs like a champ. 104 plugs,3.5 pulley, 1.9 RR . ssac headers. fwi. 2009 G8 valve springs. bill boost is the man to see!