A lot, and more is going in (as I mentioned above). I would say about $8K all said and done.
Holy crap - I'm nuts!
Seriously though, rather than sell it and get fugg-all for it, I though I would make it into a kick-arse car. Something that'll embarass many a WRX, Mustang GT and Z28! All while seating 4 people in comfort, bumping the techno and looking cool, and not like one of Camaro / Mustang sheep. Anyone can buy a $30-40K car from the factory and go fast, but there neighbor has one too.