No he didnt say much lol apart from the car in general he said it was mint and very nippy for what it is. My mechanic was pleased though. As for bore of exhuast its a half inch bigger i think than standard or somethin. But i know when i got it fitted the fella got the correct size for good flow of back pressure. Watchin the car on the dyno was class, had some amount of backfire coming out when the fella was drivin it!