Just for something to compare to! This is a link to my old truck. I've never regretted buying it. It didn't look as good as the one you're interested in but with some TLC and a paint job it's a 'winner'.
Basically my truck just needed some good maintenance and small repairs---probably all that beauty you're looking at needs. Like Glenn and the others have said; "don't expect it to drive like a new one". That said, they don't drive bad at all if everything is fairly snug.
http://geocities.com/jarge46/46_Chev.html Cheers, (and buy that truck) George