I live in the Seattle area and have recently come across a used 31 foot Gulf Stream Super C. It's looks like a nice ride, but it seems "big" on the outside. I am relatively new to RV'ing and haven't seen these before. The sales guy says it has an 8.1 litre Chevy in it. He hasn't answered most of my questions directly, because I think he doesn't know! Anyways, does anyone know the ability of the 31 foot Gulf Stream Super c with an 8.1 litre Ford motor in it to pull a boat that weighs about 3500-4000 lbs? the Super C definitely weighs more than the typical 31 foot Class C standard frame.