Easy upgrades or posiible swaps.

Hi, I have a 1971 Grand Prix that I've owned for the past 13 years, I finally have some money to put into it. I was wondering about brake swaps, or any high performance aftermarket brake parts that would work on this model. Most high end brakes seem to skip over the 69-72 year range, Wilwood seemed to start with the 73 model year.
Does anyone know of any high performance caliper and rotor swaps, or any company that may make them for this year GP.
I'm also planning on redoing most of the suspension components, any advice would be greatly appreciated...
I want the Poncho to relive its former glory
Thanks