Brake kits: 4 piston or One ??

I like the four piston Kelsey-Hayes brakes, they have a nice progressive pedal feel without power assist. The pedal force can be high in panic stops (so selecting the right cylinder bore of master cylinder is important) and they have a reputation of fading a bit after numerous hard stops. If you look at the high performance super bikes they use six piston calipers for modulation feel.

These guys have the K-H calipers with stainless pistons:
Calipers Online

I thought the Wilwood kits were for drag race applications and weren’t really sealed for all 12 months of weather conditions.