Hey, I know that guy... (Doug is my neighbor, too).

I use a 3/4 ton Suburban with a 454 to pull my 24' Olympic. It does pretty good.

The suburban for sale is a 1996 3/4 ton 454 with only 60k miles.

I'd sell mine and buy it, but I already coughed up the money for a new trans...mine has 145k miles.