If anyone would like to get a GMMG chambered exhaust for $650 we need 10 people to join the group purchase. If you want one private message sleeperz96bt (his name is Brian) at www.f-bodyhideout.com. Brian handles all the group purchasing for GMMG. When he knows 10 people want it. Then you send GMMG a check or money order for $650 which includes shipping. Pretty good deal!