what can you do to a 1986 lt-50H to give it some more pep? ive already got her cap off her ecxhaust and the baffle is out. i also drilled another 6 holes in the airbox lid(.33"). ive heard about the intake restricter? is there one. also, is it possible to rejet and get much power out of them( looking for some upgrades that arent gonna empty my wallet). thanks a lot.