Ok. i am plan on picking up this exciter for a friend. (im paying for it) then once he sees it, and i upgrade it he will buy it off me... he wants a clutch kit in it... and i tried looking up slp, & mcb clutch kits but im really confused

anyways i read the clutching 101 sticky in the "how to" because ppl "certain" ppl would get mad at me

... but as for what i read it sounds like it has alot to do with the weights, meaning in think the more weight you add to the weights the higher the topend would be because it pulls harder, I didn't understand the spring(s) that would need to be used. so the more weights i add the bigger spring i need?

alright lets just keep it simple.. the sled is a 89 exciter 570, He wants fast acceleration, but not sacrifice top end speed by more then 15mph... my question to you is what weights, and spring do you suggest i buy? what brand should i get? im open to suggestions. Thank You and sorry for the long post,
Metallica19991,