Towing
I had no luck finding a source for your inquiry. However, given the info you have provided I'd say your GCWR will be around 10,500 lbs. given that the GVWR is rated at 6,100 lbs. You can look thru the current tow ratings back to 2002 F150's at this useful web site. https://www.fleet.ford.com/showroom/...ng/default.asp


