Well maiden voyage with the new motor pulling our new camper, went great. I put 156mi on the truck driving it around before I took my new 5000lb camper we built 220mi round trip for the weekend. I need to get a bit of transmission tuning changes, just to get it to rev out a bit more under normal acceleration. Over all pulls very nice, and boy does it have some balls!!! Rolled into it leaving a stop sign and started to spin 2nd gear with a 1000lb tong weight. Fuel economy was only a bit more than with the old motor with the old trailer.