If you look close in the photo you can see the plywood and with my rears mounted they 'split' the upright and balanced things some.... wait a minute. I remember adding 30lb weights to the legs on the stand now that I write this...
point is I found having the template just recessed I could sand and paint the edges better.
I cut a gusset for support that ran behind the headlights I think.
It worked good for paint and sanding but the sawhorse table was where the bodywork happened.
I actually had it sitting on plywood behind the cab so it was chest high for sanding the bottom and I stood on the 'bed' to get the tops. (I don't know what I'll do without that table in the middle of my garage

;))