if you put the os on can you feel the diffrence? is it worth it?
u most certainly can, and it most certainly is!
run it in properly and carefully and u will have an almost uncontrollable truck! i reckon its about the limit of sensible, controllable power in a funfactor.
dead easy to tune, holds its tune well and stands up to a fair bit of abuse. good pullstart on these too, and the airfilter looks good to boot!
very popular motor for the funfactor - u wont be dissappointed