I've done some searching and either didn't know what to put in or am in the wrong forum with this question, but here goes. I have a '02 5.4L FX4 with a reciever hitch and both the 7 and 4 pin connectors, is there a code on the door or a VIN series that will tell me if this is stock towing package or a nice install of aftermarket stuff. thanks guys

 

There is no sticker label info that addresses the tow package, that I have found in disc.
The build sheet would have indicated the info you are looking for.
Basicly, the tow package could have included a higher capacity radiator, larger alternator, larger battery, aux trans cooler, the 4/7 pin trailering connectors, the electrical relays and fuses needed in the cjb.
Take a look at what you have.
I retrofited all my equipment so I know what I have.