Thanks for the responses people. I've also had the good fortune of communicating with other experts as well. Just an FYI, there aren't many people familiar with the magnificent V12. Anyway, I'm learning that it's not so much the chain one needs to worry about, but the guides and tensioner. These are the items that can go bad on you. I've been thinking about getting my hands on a borescope, and see if I can do a visual inspect down there. I don't think there's a way to gain access though. Oh well, I may just mentally prepare myself for this project over the summer. I just hate to think that this hardware might have been changed by the previous owner. I don't have any records from him, so I don't know what was done (or wasn't). I'll be sure to take lots of pics and post them if I do this.