Nearly every Porsche's natural environment is the race track. This 1978 Porsche 911SC comes fully prepared for wheel-to-wheel racing in historic and spec racing series across the country — all you need to do is win the auction, currently under way on Bring a Trailer. The car was prepped by Rothsport in Oregon, and has a rebuilt 3-liter flat-six backed by a 915 five-speed transmission and limited-slip differential. The interior is pure race car, with an after-market tach, racing seat, and roll cage along with a telemetry system. 16-inch Fuchs wheels, later 964 front and rear bumpers, and eye-popping orange paint make sure your track mates know when you go by.