thanks vic, yeah the worst thing about it it was a cop that used to pull me over all the time before it had the conversion so he just wanted to pick on me some more. im hoping i can just get away with a change of engine number form due to the R.A.C horsepower rating is exactly the same as the rb30. im more worried about having to get all the zorst changed due to the cat has been welded in and it has been gutterd.