Hijacking posts is pretty rude and a hijack's a hijack whether you're trying to or not. Why don't you just start your own thread? I think you'd get more responses as well. As for finding a vin decoder I just googled "ford truck vin decoders" and came up with half a dozen of them.

Any 67-72 truck is considered a bumpside because of the raised spear along the side as opposed to the 73-79 dentside that has the indented spear along the side. Don't know what slick refers to though.

And I'd be careful about the rust rust along the driprail and top of windshield, one of the more difficult and therefore more expensive places to repair.