Only dealing's I've had with Jamsport was when I enquired about putting a 24v v6 scorpio motor in a sierra(only rang them cos TopBoss was too far for me). The guy on the phone had never heard of a 24v before and said he'd have to ask the boss and he'd call me back. Never called back. Got the feeling that they were just not interested because it was not an RS Turbo enquiry. As said above, they do create some stunning cars, and quick one's at that.