A Fello Hawaiian.........
cuz trust me on this.....you can beef up your 4t to the max but all you can gi at most is 55-60mph.
those 2t just got more tourqe and rev,than a 4t.
I'm currently running my agility with 82cc airsal bore kit,uni filter w/122 jet malossi variater, kevlar belt,
1000 tourqe spring,2000 clutch spring,7gram rollers,with that I do a solid 50mph on the flats,35-40mph,on monster hills, friend of mine has the same set up........just put in naraku gears,and thats how her got 55-60mph w/ race cdi. best of luck in tuning yours,maybe you'll the set up....if so....please post for us bradda's to read......Aloha.