Thanks for the bump. I have been very happy with this setup. In the winter I put the GT 2 piston brakes back on and run whatever garbage wheels I have around. Right now it is a beat up set of PP1 wheels. The PP1 wheel will not clear the brembo caliper without a spacer so the summer setup is the brembo 6 piston with Boss 302S Laguna Seca Wheels. The wheels to look for are any wheels that fit the 2013 GT500 PP. I keep looking for a reasonably priced set of '13 GT500 PP wheels but haven't found a set any closer than Philly.
The GT 2 Piston floaters feel better than the stock brakes ever did on either the 300A or my '03 CV. The pedal is firmer due to the smaller piston area and the bias is more even. I'm very happy with them and prefer a firmer pedal feel. They also fit the stock wheels.
The 6 piston brembos are eye opening. I'm extremely happy with them save for the bias. With the stock rears the bias is too much forward and I'll want to address that at some point. Hopefully with the IRS upgrade that I started last summer, which is waiting patiently in the garage. I had to set it aside after we had multiple deaths in the family, I started a full gut remodel on a family house in the fall, and a new baby a month ago. Hoping to be back on the IRS this summer when the house is done..
Here are my brake bias numbers using TCE's calculator.
https://www.tceperformanceproducts.com/bias-calculator/ Front Rear Bias 2003 MM 2003 MM 0.667 2005 GT 2003 MM 0.639 2013 Boss 2013 Boss 0.691 2015 Brembo 2015 Brembo 0.68 2013 Boss 2003 MM 0.659 2015 Brembo 2003 MM 0.706 Aero6 2003 MM 0.754 FNLS6 2003 MM 0.704
And here's a quick picture I just snapped in the driveway.