Many cabinets in the US were built up from kits anyway, especially in that era, so there was really no "original" cabinets for many products. A lot of the foriegn PCB's came over to the states and were tossed into whatever cabinet was available to the local distributor.
As for the game, yes, Bagman, is a classic, and worthy of the title, but then again, I think most were.
As for UltraFlop, insult me and my machine as you may, however, I was building multi-game classic arcade compilations 3 years before MAME existed, and my UltraFlop machine sold over thirty thousand units before Global VR killed it, so it is still the most commercially successful classic arcade compilation machine ever made.