Ugh. 4500$??? I might as well move to a gt350. I'm surprised I'm having so much problems. I am an advanced driver but this is crazy. 3 hours max on pads . I need to dump 400 lbs or upgrade . will any 6 piston upgrade do the trick ? Id like to put 4 pistons on the rear too. Needs a bunch more brake.Sorry to say this but it looks like you reach the limit of the stock Brembo. Your next solution is to upgrade to race setup. Just make sure you get a caliper than can get a 1" thick pad.
I had the same problem last year. My front pads (Pagid RST-2) woulds only last 6-7H on a easy for brake track. I did kill one set in 4H at Indianapolis Motor Speedway. And my brake pedal was gone after 2-3 laps and I have 4" brake ducts.
I installed the AP Racing with the race ABS kit last winter and it's one of the best mod I've done so far. I can get 10-15H on the pads and absolutely no fade, even at IMS for the full 20min.
https://www.essexparts.com/essex-de...brake-kit-front-cp9668372mm-mustang-s197-0613
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