Original frame rails

I bought a set of original frame rails (average condition for 72 years old). Would anyone recomend using them for Hi Boy car, or should I go with new chassis. The nearest 32 frame jig is one hundred miles from me, can a person rig up a home made jig to get everthing right? I know it would be alot of work, and I would have to purchase frame horns, boxing plates, cross members etc. I'm not in a rush on this project, but I would like to get opinions on how I should go chassis wise.

I guess I would go with a new frame. Like Streets said the fatigue factor on those old rails is a consideration. If you want the original looking deuce frame, ASC makes a great set of reproduction rails, and there's a ton of companies selling deuce frames in any stage of completion.