Yup. I think achc is going to have some good suggestions though! Probably a new wheelset, brakes, stem, bars, shifters, fork, shock, seatpost, tires, headset spacers, casette, derailleur cable, rear derailleur, front derailleur, crankset, chain, and maybe, depending on his expert opinion, maybe a new frame.

All in all, you'll probably save around 51 grams and you'll be ready to be a proffesional racer!