Hi all,<br /><br />I just bought an '89 F-150 inline 6 cyl with 4 speed stick shift to tow my fishing boats. The manual says that, with the rear end in my truck, it can tow up to 4,000 pounds if the towed frontal area is 60 square feet or less. That represents a 7.5' by 7.5' (or smaller) square...