Brakes for HDK K Member

Hello all,

I just picked up my HDK K member and it looks amazing! I am confused about the braking options for the car. I know that I need a setup for a Mustang II. The confusion comes with the choices that I have. Wilwood makes a nice 4 piston and six piston kit with a 12 inch rotor. I can also go stock with a single piston caliper and a large rotor. How much more braking force will I generate with a 4 piston / 6 piston caliper over a stock type setup.

Keep in mind, I am not autocrossing this car. It is a drag car with limited street duty. It will be going under a 72 Dart with a 500" BB.

Thanks for your help