Last year i did some work on a guys suburban and he also works at my locol dealership. in return he was going to clutch my sled at no charge. He uses a radar gun and throws parts at it untill it performs its best. I really want to put a roller secondary on it and was wondering if it is worth the money. I have a 2002 edge x 500 and i do some ice and drag racing, but also want a nice setup for trail riding.