Bolt-on big brake solution. Using these brackets, you can bolt on Porsche 996 calipers+Audi D2 A8 rotors to your Audi Coupe/90 quattro. This is a good option for those running smaller wheels that cannot fit the Brembo 18Z kits.
 
CNC machined from high-strength alloy steel, and optionally painted for rust resistance. Hardware is included for mounting to the uprights, but not for the caliper.
 
(NOTE: requires 5x112 Audi S2 wheel hubs)