Really.

A guy came to look at a 1988 Centurion Ironman Carbon. Tubing glued into alloy lugs. Alloy fork, which is pretty flexible. He likes everything about it, but is concerned about durability. It is running Bontrager Race wheels. If it was steel, he'd be riding it now, I've no doubt. I'm clueless as to whether it would hold up.

Pro: I'm 6" shorter, and 70lb lighter, but I'm probably slightly stronger than he is, and I've really pushed the frame, with no problem.

Con: He's definitely going to apply more leverage, it's 21 years old.

All input is appreciated.
I've had sellers and bike shops refuse to sell me certain frames (Trek OCLV carbon and the Trek 1200 when new) for fear of me breaking them.
Maybe I just look clumsy, I dunno.

Now I'm on the other end, and clueless.