When I first got interested in swapping an SR into my 240 I found them on the internet. I called them and talked to their sales person( I can't remember his name) but he answered all my questions, we talked for almost an hr, very helpful. I didn't have them do my swap for two reasons, 1. I would have to ship my car because they don't sell you the kits, 2. If something went wrong with my car later I woundn't know anything about what was done, so I did the swap myself in about forty hrs by myself. It was easy, I enjoyed doing it and I know everthing that was done. I got my kit from Heavy Throttle(
www.heavythrottle.com/), Jeff is the owner and I called him continuously with questions while I was doing my car and he gave me a great deal. About seven weeks after I got my car running one of the over the plug coils went bad on #3, I called him and told him what was wrong and even though it was about three months since I received my kit he sent me a new one in a few days. I far as I'm concerned Jeff and Heavy throttle is it, everything you need to know about doing a SR swap, Jeff can and will help.