Yeah I might check out getting another cat from the junkyard today since im looking for a IM to bore out. Its gonna be hard since my car has a sweet low low rumble to the exhaust since I gutted the cat. funny how Honda owners look around when I idle up to a stop light! I know they make hi-flow cats but someone else said something about the cat so I want to test with it back to stock first and with the stock wheels too. Im racing a saturn sc1 and he beat me 3 out of 3 times. last run being only .3 sec ahead of me. his car is 100hp sohc and weighs 200 lbs more. Its all on the start since we race on freeway and he CAN NOT pull away from me at 40mph+.