Welcome to the 'bolt (err, back to the 'bolt).
As Justy said, this isn't the best place to ask questions.
Just so we understand, you have TWO complete trucks and a Hotrodded frame?
Are you asking about re-habbing the barn find frame? or the hotrodded frame? or both?
I would start by looking through a shop manual.
I power washed everything before I started.
When I did my 39 pickup, I tore it down as far as I needed... bagging and tagging as I went. I also clean up, paint and polish as I take it apart.
I cleaned the frame by wire wheel, oven cleaner and elbow grease. Then painted the whole thing with POR-15. I installed a M-II front end but used the rear springs adapted to a more modern rear end. Replacing the worn bushings ect. I also replace the fuel and brake lines front to rear.