I posted here earlier looking for pad shims. I was scoffed at, as usual.
Carquest/ Raybestos sells them . FWIW carquest also sells a
" Blue pad" that is nice for track days or tracks that are not brake intensive. I cut the shims in half and use the piece under the trailing end of the inner pad.
The results are a more even pad use, thus a better pedal for longer time frame.
I also rebuild the calipers very often, like at axle time or 10hrs. The current brake fluid seems to swell the seal and hang up the piston a bit. I leave out the dust seals and notch the piston for air to pass between the piston and pad.
The Pistons like to be well into the bore. At about half pad wear, you can fit a naked pad backing plate behind the inner pad, keeping the piston deeper n the bore. The piston will not bind as easy this way and the car will roll cleaner.

Use as much brake duct as you can, cool is better for the brakes and wheel bearings. They are related!!. Roast the brakes and the wheel bearings will be failed soon also.

Read the rules to see if any improvements can be made legally.
MM