Bob,
I know one guy who tows his Travel Supreme with a converted T2000. He really likes it. You just have to plan in advance what RV parks you can stay in.
Guys with pickups and MDTs never have enough HP, but believe me, 430 HP and 1,550 torque will keep you smiling. 550 HP is more than you can ever use in any RV situation and will wear out your drive tires much faster IMO.
onezman
http://onezman.tripod.com/yourrvhaulercom