Well just an update here, not quite ready for a DIY thread yet, but yeah. Got these for $37 shipped to my door on ebay. The guy didn't know anything about them, and I imagine they had been sitting around for a long time before then.
Lenses came off pretty easy. I almost got one completely off at room temp with a small flathead but then it sort of fractured. It still seals completely and is entirely covered by the bezel, so I'm not worried. I'll have it sealed up nice and good by the time the install comes.
After this little incident I decided to bake them. I set my oven to 170 and cooked them for 2mins 30 seconds at a time and then worked at the glue. I bet I could have gone a bit hotter and longer, but I'd rather put in a little more elbow grease than a warped lens. They came off pretty easy after that and I'm excited to paint them up!
I'm undecided if I want to polish the reflectors off yet, or just leave them as amber reflectors. I've seen people sand off headlight fluting and reflectors so I know it's possible, but the reflector look could look kind of cool. We'll see!