i would say c/a pro skis, 3-5" riser, portaper bars, dragon bar hooks, holtz spindle, arfx a-arms, fox evol X ski shocks, and fox zeropro shocks on the skid...
Thats were i would start if you want a sick race sled. Don't forget about porting, and running 110 octaine.
A sled like that will stomp a 1000 on the trail, those polaris 600 IQr's haul ***, probubly be close to me 800 IQR mod.