If I'm putting it in the 'wrong' car entirely, it's gotta be a Corvair wagon. I know Corvair people have used Porsche transaxles before, so half of the work is already done.
Or, I'll sell the completed engine and use that money to buy a decent 914 2.0, or buy a really bad 912E (My favorite poor man's Porsche) with the same engine. It is unfortunately not easy to find a 912E nor a Corvair wagon though.