none of the mods I did were ever about speed, I think my ski is slow on top end, but it does have good power and big low end. AJ you should get waxs carb/manifold for the least hassles
Do whatever you think is right for your situation, spending $500 AUD for little gain when you have a good reliable setup....well your call
some one should by my single carb manifold i did back flips with it, so it must be mint Ryan Baily has a baby dick,