Using a hosting site like Photobucket is the best way I've found to post multiple photos in one post.
The 2A frame has some differences, but for the most part, 3A stuff will bolt right up. A CJ3A frame is much stronger than a 2A frame, but that one looks to be in excellent condition.
The hubs look like a semi-modern version made by Warn. If they work, I'd keep them. If you're going for a more vintage looking hub, they show up on eBay fairly frequently.
Tim