Handles a 19' Bambi with power to spare.
Don't know for bigger AS but that set up handles a 19' Bambi really well.
Many thousand miles and 2 cross country trips no problem gas mileage drops to 11mpg while towing, normal mileage not towing 17 to max 22.
My reared is the normal 3.8.
2001GMC Z-71 5.3L 3.73