Hello and Welcome KenPorter!
Sure would like to see some photos of that original truck
Here is some info about mounting up 16x7" Ford wheels and adding wheel clips to keep the look factory. You can have them powder coated as well.
I got this from other websites so no credit to me, just trying to help out.
http://www.laroke.com/larryk4674/smo...er/hubcaps.htm
It Looks like the 2006-2013 Econoline wheel is the ticket. You must use original clips from an 8 lug wheel.
1/2 ton or car clips that are reproduced are too short.
The clips need to be straightened out a bit to get them closer to the rim. A few light blows from a hammer did the trick. I installed the clips flush against the edge on the ramped up area. Hubcap snapped on firmly. I believe the weakest link is the screws, it’s hard to get them to stay tight. I would like to do a hot rivet, just like the way the clip type wheels were manufactured.