But that's the question why does a 07 1500 pull it I was hoping someone had a suggestion of how much weight to add to make the f150 at least pull a trailer without fishtailing I had a 1970 f100 same drive train it went off road without a issue this truck also with a 9" 355 gears is worthless on wet grass . I guess I will have to scale a older better built truck to see where weight is positioned.