67 convertible cowl repair

Well have start work on the cowl area of the mustang got the upper panel removed to see how bad it is. Going to have to remove the dash panel too so to get to the cowl side panel and replace them too, along with having to but in the outer end patch panel for the fire wall too! but I thing before I go on I will have to make up a chassis frame jig for the car it will be needing it with so much structural repair that it will need the jig to keep the rest of the car in it proper placement