best place to get big brakes?

Yep, that is Tim's car. He runs one of my 13 inch front rotor kits with late model Viper calipers. The Mustang rims bolt right on without a spacer.
At the moment he is running 17x9 rims but he has also run 17x8 rims in the past. That car ran 10 inch rear drums for several years. He recently converted over to rear disc brakes using a bracket system that I designed which retains the tapered roller bearings. The rear discs are slightly lighter than drums and they have a linear response which is better for high speed racing.