Thanks for the replies, guys. I was in fact in contact with Pulliam. The issue here is that the pinbox is not the standard Airborne, but the extended Airborne. I received a reply from Nick who advised that the pinbox would require drilling and tapping, and the front of the "universal" capture plate would require "trimming". The plate is thick enough that "trimming" would likely require a cutting torch. The dealer that ordered the hitch and universal plate advised me that he didn't want to make a "Frankenstein" mess and advised that the custom Demco capture plate would be a perfect fit, would attach and remove easily, and would be infinity more appropriate to my application.
What I would really like to find out from any forum members is if the Demco capture plate will work with the Pullrite hitch. The dealer advises me that it will, but I would far rather have this verified by a fellow forum member.