just got done ordering the OBX system last night. so i will have a full review for you by next week, if it delivers in 4 to 5 days as listed. final price for the kit was 845, plus i will be purchasing bolts and gm gaskets so lets add maybe 60 bucks to that? and exhaust wrap- add 90 bucks. and a retune will be 75...so overall i should end with around 1070-1100 bucks. sure hope these things are not crap.