The only difference I see is a PBC is the design it has 1 2" intake and it exhausts where the re bar goes through the sides at the top of the barrel. The intake is open full during a cook. So it cooks Hot & fast. Go to the website and watch a few cooking vids. It shows it in action. I think a UDS can be easily modified to work the same.
I never met a Cow that I didn't like with a little Salt & Pepper! Certified PORK-A-HOLIC