Ive been running the Racers Edge Super High Temp ones with steel calipers.

Get the Racers Edge Super High Temp brake discs of Amain hobbies.

They're fiber discs, and trust me, these thing can take heat. 40 Min A-Mains and still stop on a dime.

And try and get part #87049 for the calipers. Just use the calipers and leave the pads, throw them on ebay or something..

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Just get part #87049, and use that with the stock discs, they have rubber pads supplied, which Ive used, they are 100% better than stock, but the racers edge ones generate enough power to flip my truck on asphalt...