68 Tradewind Door Hinge

[roostream]

So i want to replace a side panel on my Tradewind, which I'm comfortable tackling – however, I'm not sure if removing the door/hinge assembly is a good idea. Right now the door opens and closes fine. I can't find any info on these hinges but they bolt part in the back appears to be cast as part of the hinge itself. Closer inspection on the inside revealed that the bottom bolt snapped off at some point, so I'm a bit concerned about creating a much larger problem here. Any suggestions?

Thanks, ROO