If you looking at the one in Fairburn, GA - I beat ya to it!
I'm headed over there in a few minutes.
All the usual used car thoughts apply to these cars.
But some specific things can be found by looking over this forum.
The only two I can THINK of are:
... oil leaking from the valve covers? (Not a big deal, but might help you get the price down.)
... I'll be trying hard to gauge the condition of the clutch (some of these cars have seen hard driving).