Disc Break kits. dana 44 & 60 rear 71-K20

[mattfrediani]

Does anyone offer high performance big disc brakes for my 71 k20 with a dana 44 up front and a dana 60 rear? I want this heavy truck to stop on a dime.
I have standard calipers with drilled slotted rotors on the front but it needs better calipers and I hope to add larger discs. Can this be done with a kit?

Also I want discs in the rear but All I can find is the lug nut kit with eldorado calipers. Is this a heavy duty enough set up?

Thanks
Matt