They have A frames on the wheels, my roadster is currently sitting with both fenders gone off I'll nab some pictures.
As for going fenderless it wouldn't be much of an issue to lop the whole front body off the car as the roadster has a frame of its own.
edit:
I considered lopping off my windshield and installing an old school hot rod one and making mine one with an L28 but decided against it as I just couldnt get it looking right in my head. So going with widebody instead, like the old school ISMA racers.