Go with the 6sd if you are looking for the heavy tow,I have a friend that has an 03 with 6sd and AFTER 200,000+MI OF OVER LOAD COMBINED WITH HIGH SPEED ABUSE,finally took out 6th gear, an auto in the same conditions might last 30,000mi, maybe?Originally posted by klenger
Aside from the reliability of the 6 speed, you do get an extra gear for climbing with the 6 speed. I have about 500 RPM gaps between all gears.