I really appreciate your assistance. I may have paid a little more than the case was worth, but I knew it wasn't genuine. With shipping, I paid $335. It includes a case, back, bezel and insert, and what I believe to be a genuine tube (already installed), crown, and crystal (I had been watching two similar cases from two different sellers and had verified information with one of them - I signed on to ebay and realized that there was only about a minute left before the auction ended and in my haste purchased the one from the seller that I had not contacted - big blunder on my part).
If I'm correct, I need to pick up a movement, dial, hands, and stem. I'm not sure if the cg's have been moded, but I believe it is a 1:1 case. As you eluded to, it is prepped to take a 1530 or a 1520. My thought is that I will take my time finding the genuine Rolex movement and pick up an ETA for the time being (assuming I wouldn't have to make any modifications - and it sounds like I'll just need a spacer). I've never purchased a rep before and am new to all this. I've just been reading this board for a couple of weeks and wanted to try something. I guess the next thing for me to do is buy some tools and possible take the online Time Zone watch classes (any advice on those classes?). This project may end up being an expensive lesson, but as you say, I'll have the pride of knowing I assembled the watch. Additionally, I should learn more about Rolexes (specifically the 5513). This will probably pay off in the long run if I decide to buy a genuine.
It has been quite interesting reading the post on this site. I would say that people on this board know far more about Rolexes than most of the people who own the real thing (Of course, it sounds like quite a few people on this board do own the real thing). I have genuine sub that I bought from an AD in '94. But to be honest, I probably couldn't tell the difference in it and one of the unmoded replicas without holding them side by side.
Once again, thanks for your assitance,
Ben