The brakes will definately be upgraded as I dont want to use four lug wheels,the stock mustang brakes probably would work good on the truck as its about half fiberglass and it probably weighs less than a stock mustang. I want to build a thumpin motor but I am more concerned on how it rides and handles than how fast it goes as in its stock form it is terrible and I cant handle riding in it on a long trip,I know those 30s trucks were made to work butI hope to remedy that. Jeff