CMC cars do OK in WRL in GP2 if you ballast up a bit. We have run our Camaro twice now at COTA and at Road America with decent success. Awesome enduro bang for the dollar with two 8 hour races in a weekend and you can get away with one set of tires per weekend which is great. In fact, the set of tires we have can probably do another 16 hour event.

You guys looking for enduro kicks should look into it. Great fun with 4 drivers!