[Bill Harris]

I started out looking for a class C but found my way to a class A instead. Maybe I'm too anal, but I tend to pay attention to the mfg specifications and the class C chassis don't have enough GCWR to tow most enclosed racecar trailers. The F450 chassis has a GCWR of 20K lbs and most 26' to 32' class C's use up 14,500 of that in their own loaded weight (GVWR). You only have 5500 lbs of capacity for what you are towing. You might get away with an aluminum trailer and a really light racecar and get it down to 5500 lbs, but it's not likely. A trailer-toad would probably really help in this case. An open trailer might work pretty well.

The Ford class A chassis has a GCWR of 26K. I purposely looked for a short overall length with a long wheelbase and a fairly low GVWR to maximize the towing capacity.

I see quite a few Ford chassis class C's, even quite a few E350 chassis which only have a GCWR of 17,600 lbs, towing pretty substantial trailers, so it CAN be done. I wouldn't want to do it myself, however.