4 piston brembos, Master cylinder, proportioning valve confusion.

racerjoe said
I used to run the Gen 1 Viper Brembos and Cobra rear discs. I use the 15/16" master with no power assist. They worked perfectly. I recently upgraded to the wilwood 6 piston and changed nothing else. They work even better. No reason to have power assist.

FYI. I now have the HDK kit and I used a Mustang 2 drop in replacement that uses the C5/C6 hub/brake. I ended up using the rotor I was previously using with the Brembo, which is a 2012 SRT Charger rear rotor- 13.75". Be aware of the corvette rotors as the brake surface isn't offset very far from the hub face. Once you install that big caliper, wheel fitment can become a problem.

Interesting. I figured wheel fitment might become interesting, I have the wilwood drop spindle with a bracket to run these Camaro calipers and corvette rotors. It’s already pre assembled tho to where I just bolt on the caliper and rotor. Hub and such is already on. My bolt pattern is going to change to a Chevy bolt pattern and I’m going to have to drill out my rear to the correct bolt pattern. But I’m thinking if I got anything other than the style rotor he recommends(the place I got the brackets) If it would even line up with the caliper correctly at that point.