hi im lookin for speed upgrades for my 2004 Polaris Trail Blazer. I'm tired of going riding and getting left behind. i was looking at a couple of parts such as the RCR Stage 1 kit, RCR Hi-flow Air Box Modification Kit, and a RCR Quick Rev Flywheel Modification. i was wondering if you guys had some other parts that aren't overly expensive. also wat the Quick Rev Flywheel Modification and the Hi-flow Air Box Modification Kit will add to my TB.