So I really need a new track. Right now I'm runnin a 159 polaris track and its done. I am kinda thinging about going to the bew polaris pitch but cant decide on the 155 or the 163. I'm riding a 97/03 mod poo 700. Its got all 03 suspension, tunnel, seat. and 97 motor, bulk head, bellypan,hood. Motor has some work and nitrous. Is it going to slow me down too much to be worth the 163. I ride in northeren utah and Island park area so light powder. Also where can I get some extrovert drivers and a track for a decent price?