I don't see any good reason to use anything other than the 13 inch Viper kit that I designed a few years ago for an A/B/E body street/track car. This setup uses robust factory parts and is quite a bit cheaper to install than the Baer high end stuff.

The OEM's all use Brembo calipers for their high end cars. You won't ever find a Wilwood caliper on any OEM vehicle. The PBR stuff is used on mid-range vehicles such as Mustangs but the top end stuff always gets Brembo.