I'm trying to do some brake repair, and I have these calipers I've never seen before. I'm thinking they're brembos are wilwoods, I've searched them up and I can't find anything exact. Any input on it would be appreciated.

 

Those look similar to 4-Piston OEM Brembo possibly from an CTS or ATS or base Corvette. There are threads on here installing them. Look for those and see if they match what you have.

Doing some googling and that looks more like a caliper from a some brembo upgrade kits but not exactly.

 

Maybe those are 4-piston 2004-2007 CTS-V Brembo calipers.

I found this video and those look like them.