Woody - Yep - 8 maybe 9 tops if that thing weighs what I'm guessing it weighs. That's about all I get when I tow a 3500lb trailer. Your aerodynamics are somewhat better with that trailer and 40 than the box I tow, so you may do just slightly better. At least you are prepared for the shock! hehehe
80 is looking good too!!!
80 is looking good too!!!