Hi i am looking 2 buy a sled it will b used mainly for trail riding and drag racing wat should i get the zr is a 2000 800 body with a 121 by 2 1/4 inch track has a king cat 900 engine with the complet d&d 1147 big bore with twin pipes and the other sleed is a 2005 king cat 900 with 151 by 2 1/4 inch track the sled is all stock but has can simons flex skise and fox float shocks bothe run great the zr is carbed and the king cat is efi wat would b the better choice 4 racing and trail riding