I have to be the first.......You NEED a Kenworth to tow a casita!.......there someone said it!
I'd tow a casita with my wifes ML320 mb suv, and it has the smallest V6 they offered in an ML! 200 ponies should be able to tow 4000 lbs! I'd tow it with my probably now in the junk yard 76 Toyota pickup with a 20R I4, and maybe 125hp......or the 81 gmc with a 105HP I6..........who needs a blinken V8!
Marty