That uncle has given you a really great bike. It's kind of a great sleeper - looks tame, and can behave very well, but when you rile her up, she growls and can really put a smile on your face.
At 64K miles, she's just breaking in. Several bikes running around with over 200,000 miles, and many with over 100,000.
Gumby's right... put up som pics, we'd love to see her. I know, we've seen plenty of C10s, but hey, the more the merrier