This is what they sent me after I asked them for a quote. Funnily enough they came recommended from some PH'ers.

"Hi, unfortunately we are currently unable to offer any service on Brembo 4-pot calipers. This is due to the bolts being steel and the casting being alloy. Over time the bolts weld themselves together to the cast. Part of our process involves splitting the calipers in half to clean them and there is a high chance that they will shear inside the cast when we attempt to split them and thus the caliper will become scrap."

Thinking of a finish like this -

Brembo.jpg