Newbie wants an FC but worried about the Cat 3208 engine

[ohiofancydancer]

I've been looking at early FC's on eBay, etc. What I hope to find is
a 'Bird with the Cat 3208NA and air suspension, which means 1981, late
1980 or early 1982. I am concerned about the frequency of these 'Birds
having a new engine installed at 75K to 150K miles. Some of the threads
that I've read say that the 3208 "should" be good for 300K or more
before an overhaul or replacement.

Might most, or all, of these low mileage replacements be due to poor
maintenance? I'd really appreciate the advice of someone who has had
some experience!

Thanks,

Dan Snyder - the Fancy Dancer