Would it tear up the auto trans shifting it manually? What could be done to beef it up enough to withstand that? I'm looking at a 2002-2003 f150 reg cab long bed 4wd 5.4 auto, with the 7700lb pkg. Thanks

Edit: Never mind about the 7700lb pkg. It ended up being a almost 26k truck:o. I'd get into a F350 for that much.