I can recommend that should you find one with standard air filter to have a look inside before and after driving her. Get her above 3k revs and see if there is any signs of oil being pushed through the filter. A sign of wear will be a wet casing, need lift out the filter and look under it. Just from my experience...

Can fully back up the comments about how much fun they are - oh and check your sunroof,if its seized thered a good chance the seals will be questionable this can lead to leaks and or a rusty roof.

G