Going Shopping

Going to look at a ’92 SVX today or the next day. I just wanted to hear from people who have already gone through the buying experience. What specific things should I look for?
I will probably have the local Subaru dealer check for mechanic problems or hidden leaks and what not. It does have a puff of smoke when you put a load on it. Seller claims that during recent head gasket change (buy dealer) oil got in around the pistons.
But it was a couple of months ago, so I think the oil would have burned out after a day or two, correct? Any ideas on that?
Anything else to look for?
It is a Green Lsi (leather?), no spoiler. 130,000 miles. Cosmetically in very good condition.
What would you pay?

Thank you for your help.