Thank you very much and I'd love to but there is that pesky entire continent between us
I wasn't sure exactly what you had. At random I found this.
Looking Back: 1961-63 Ford F-100
So the 'unibody' has to do with the sheet metal, the way the cab and the bed are connected. Normally they aren't and I guess this vehicle is how they figured out they shouldn't be. We learn by doing.
There is a collector market and that thing is
cool ! Southwest vehicle, been in a family for decades, limited run .... the ad writes itself! I haven't seen it to know the actual condition but I'd be careful before letting it go on the cheap. Restoration means real shop real skills. But hell if we were neighbors I'd be farting around with it to see if I could get it running