"What's a half door?" at which point I had to explain to the sales manager in detail what a half door actually was (who obviously should know better since they were a factory option at the time).
That was 4 years ago and I'm STILL pissed about the dishonest and incompetent stuff that they said...
To answer the OP's first question, they are ALMOST identical to the 10A / Hard Rock / Rubicon X bumpers, but there are small differences, especially where an accessory bar would mount. I actually have the Hard Rock bumpers on my JK (with the Maximus-3 bar) and I can see the small differences...