Dang, that's awesome. I'm just about to hit 45,000 miles. I figure by the end of this coming summer, I'll have about 70,000 on it. I've been doing all the normal maintenance scheduled out in the service guide. The main stuff, anyway. Oil changes religiously, valve checks, TB Synchs, etc. All on the original stock engine.
What I'm interested in is your comment about stripping the engine down and rebuilding it. You make it sound like it's nothing, like most of us spending an afternoon detailing the plastics! It makes me curious as to just how involved it is, how long it takes you and if there are any unusual tools you need, things most average wrench monkeys like me would not have in their tool box.
EDIT: Oh, nearly forgot to ask, on a motor with 45,000 miles on it, are there any serious concerns to be had at this point?
Kudos to you, bro!
--Wag--