I have a 1992 Exciter II 570, did a custom 136" track/tunnel extension last season, stilll have the stock gears in there & wow does it suck balls, haha, would a phazer 136" gear set be ideal??? It is pretty much fully modded.. its like a 1 3/4" lug track, has a pipe, modded airbox, clutches both tuned for mods.. but ya it only has balls till like 6900RPMS till it wont shift... help muchly appreciated!!! just looking for what gear set to purchase and I'll be on the mountains passing the rev's this season!!