I carry along the same things as Blusmbl. Enough rockers and springs and pushrods to do a cylinder, spare rocker shaft, spare fuel pump, spare electric water pump, valve cover gaskets, couple of coils, alternator(forgot this year), and battery(also forgot).

Basicly if I know 100% I can't get it from the Summit Truck or parts store I bring it.

My car with tires, passenger, tools and parts crossed the scales at 4020lbs this year. I had never weighed it before but I did this year after getting lost in the pits and finding the scale in the process lol. The car after a pass weighed 3515.