Originally Posted by WaltW
Let’s put the semantics aside, OP deserves an answer to his question.
Old Skipper did answer his question in post #2.
You made the comment that it was the diesel engine and as I said there are so called Super C's that are gas, JAYCO made some, as there are also E-450 based "C"s that are diesel.
2JayBirds said it was the change to FREIGHTLINER.
THOR is currently marketing a "SUPER C" that is on an F-550 chassis and it is not much larger than many E-450 based "C"s.
Don't you think JAYCO would list the SENECA as a "SUPER C" if that was a true designation?
There is a group on YAHOO that has anything from the KODIAKS to HAULMARKS, which by the way are called just Motor Coaches by Haulmark and they are really big truck conversions.
So it is actually semantics.
All of my responses were to give the OP correct and accurate info.
Please tell me what info I posted that was incorrect.