MoPar Brake Upgrade Options?

C-body 11.75" rotors are 1.25" thick.
I'm running a pair of '73 Chrysler discs on my daily driven '73 Dart.

I've run Hawks Racing pads and EBC Yellow Stuff pads which were I nice improvement.

Currently I'm also using the C-body calipers as well but definitly would like to switch to a lighter caliper soon. But its combined piston-diameter has to be the same of pref. larger then 2.75" to be an actual upgrade for me.