Where to find 355 Challenge to trade for Porsche track / street car..

I am looking for a 355 Challenge car to trade my Porsche 930 track car... I am looking for somthing more track oriented, but would consider somthing that is streetable.

My car is an 86' 930, with a 3.4 liter, 500 Horsepower Turbo Engine. It is running RSR coilovers all the way around, has full cage, carbon fiber fenders. It is completely street legal but set up for the track. There is about $110,000 in the car and I have receipts for most everything. The complete build was done about 10k miles ago which is nothing for a Porsche. It is a bulletproof and rediculously fast car.

Here are some pictures.