Basically there are 2 ways to improve the brakes.
1- Use a bigger booster, or use a Hydaboost. The Hydraboost are the most powerful booster you can get.
2- Use a larger rotor. The CPP 13” kit or the Willwood 14” kit will improve the brake performance.
FYI: The D52 caliper has almost the same piston area than the OE caliper.
This web address shows the output of different boosters.
http://www.classicperform.com/PDFs/B...ssureChart.pdf
Danny Nix CPP