The second frame rails are for a Semi cab. (Very Short--Think IMC Dodge L700)
So you Want the stake bed chassis frame rails for that Rescue.
I would love to do the Young Canopy cab from Neville Island, Pa.
Too bad I have only a few hand drawn sketches with a few measurements.
Not sure what happened to her. was at a scrap yard last time I was up there.
I actually started one with the Napa box issue of the C, but had no measurements/pic's/drawings at the time.
The canopy is different than all others I have seen pic's of.
Hope to see this Rescue started.