Body rules could save you a lot of money. Remove 800# of downforce and an LS out of a truck could win. That's about a $30k savings. Tires? Don't you buy what you need when you need it? We run our stuff until it's done. Seems like most competition puts new on every night. If it's new, who cares if if you have 5 or 2 kinds to choose from? Either way, you bolted on 4 new ones.