I've uploaded a carset from Roderick Potter for the 1978 season. You can get the file here. I've also uploaded the newest version of the 2001 carset by Srdjan Kos. You can get it from the hot downloads section above.
Seems there is a great response for the FOWSC championship. I was sure that had died, so I am glad that people still want to run. I will finalise details with Wim, and get to work on it right away. There is a good chance somebody else will run FOWSC for me.