650 sx engine mods?

[fj40cody]

I'm wanting to get some more power out of my 88 650 sx! for freestyle. PLEASE HELP. I all ready have oversized pistons and aftermarket reeds. Every thing else is stock! Except the skat trax impeller. Should I go with bigger carb? West coast pipe, waterbox? HI comp. head? I just want to keep the ski reliable. I always run the best pump gas! Any suggestions would be great!
Thanks Cody

 

[Motorheads5]

A pipe is alway's a good way to wake up a motor I have a nice westcoast for sale.