I sent them the original compressor and drier from my survivor '70 Challenger R/T. I included explicit instructions via email and in the package not to repaint anything, as the original paints condition matched the overall very good survivor quality of the car.
Turns out that the compressor body had a broken crank and was not fixable, but my very nice drier came back re-painted..over the perfect part number and all. Very unhappy.
Other than that, the rebuilt components do work very well.