Those are Pintlers (sp). The backspacing is custom tailored to Jeeps (you tell them what size tire you're running when you order) so that they'll get as close as possible without rubbing. They're pretty much the cream of the crop as far as wheels go...the only thing that really compares are Walker Evans 'locks...Stan, I very much like your truck! You should get "AEV" wheels. They make them in 5x5.5 lug patterns (I think?)
Please note: mad Buffalo center cap.
I think they do come in 5x5.5.