Yep, I did, got nothing other than what I already knew....

So, it is referred to as an F-150 "Special" Pick-up Truck.... so being special is to be the F-130 it seems.

Just read through this entire thread. What a great story. I think there is always going to be some mystery about the F130, but I'm convinced it was just a work around for emissions standards at the time. Gave people another option for ordering. Although the real mystery is why the F13 designation is missing from so much documentation. You'd think Ford would have recorded that.