You were close, most of the Vette brake calipers these days are sourced from PBR just like the Mustang calipers. But the Vette stuff is a little different and I don't think pads interchange. I'm about 99% certain that the Baer Mopar kit uses a Mustang Cobra caliper and pad.

The Baer rotor is also a Mustang Cobra rotor, but I think they are machined for a Mopar sized center hole. So a parts store Cobra rotor probably will not fit.

The Baer stuff is really high quality. They do a good job with their kits which is why I often recommend their stuff to people.