Plus one on the turbo seal check. Other than that, the normal stuff you'd check with any used car. Take it to an independent mechanic to have them check it out; well worth the fifty bucks or so.
Much props to the Legend! I have always loved those cars and still drool a little bit when I see one. Thought about picking one up years ago, but they're so difficult to find with a manual transmission and, for some weird reason, damn near impossible to find with less than 150k miles on the odometer.
Oh, and if you haven't seen this in other threads, Velocity Red is the fastest color.
-Jay