If you tow, get a tune and maybe some longtubes. Build the tranny but keep the stock stall speed. Yes you can tow with a higher stall speed converter, but it sucks. I have a full bolt on truck with a 3000 converter, and even towing my 2500lb boat sucks. I daily this truck and at best in the city I can get 13 mpg. When I hook to a trailer I'm lucky to get into the double digits. Before the cam I could get 15-16 city mileage and towing would only drop to 12-13.