Max Torque Big Block

Nope, final answer, lolol! But in all seriousness, if you get on the HD/motor home forums and research it, your going to pay the price now or later... the efficiency and extreme long term reliability of the diesel route pays for itself in fuel consumption over the long term. But yes, diesels are an expensive option, it’s advisable to upgrade the transmission and rear axle in a high load diesel application, Diesel harmonics (especially in six cylinder versions) oftentimes match the running rpm of the drive train, effectively multiplying harmonic vibration, and a good 6BT would bring a premium. It depends on how much your going to use it, but any real long distance and long term use will come out cheaper by going diesel. But, with only moderate usage, Andy’s plan would be the route to take.