F650 as 5th wheel tow vehicle.
I'm currently towing my KZ Montego Bay Sportster with a 14K dry weight and close to 20K fully loaded with a 1999 F550 7.3 with 4.88 rear end. I'll start by saying I love this truck. In most all situat...
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At least, do a good 4" exhaust to let the truck breath as it's going up the hills.
