Went to the track and.....

Hello all, I went out for my first track day yesterday and I can't believe how fun it was. But I was left with some ways to improve performance of my 96 m900. I currently have the 41 flat slides on and my gearing is 15/41. When fully tucked in I was only able to get 117-120 for top speed. There was a guy with a 750ie who was able to top out at about 125 and seemed to have the same pull as I had. His gearing is stock 15/39 I think. I loved the torque thru the corners it was awsome but the top speed was hard to deal with, people on the big liter bikes had 40-50 mph on me, I was able to gain on braking and cornering (couldn't pass in the corners) but they would blast away or past me in the straights. My question is what is the best way to get more power from the engine, 944 kit, high compression pistions, st2 cams? If anyone has any input I would really appreciate it.