Making the busa LIGHTER. better round corners/track

[kawasuki]

As much as i try i just cant keep up wit my mates on 1000s, in a straight line i kill em but up in the hills i get left behind. I know the bike isnt made for it, and i dont expect to BEAT them round corners, but just asking about some tips/tricks for makIng the busa more corner friendly, if weight reduction, suspension setup ect...just asking for advice. Thanks guys :)

How much do u want to spend???
There is wheels ,brakes,fuel tank,shocks,fork setup and exhuast also swingarms.