Robert -- no worries, we've all been in your position at one point
-- my advice here would be to get a PPI (pre-purchase inspection) performed by an air-cooled Porsche- knowledgable shop that hasn't previously serviced the car. They should be able to assess whether the head studs are currently in good shape (or whether any have already pulled out of the case and require timecert/case savers -- since my aluminum block hasn't had any such issues, I'm not familiar with his particular issue) -- If I was in your position, I'd be looking for a car that doesn't need much work up front -- an engine rebuild to address these issues could quickly become a 5 figure endeavor . . .