This is a very typical rust repair I have to do on the HQ - WB (WB Van in this case) cowl area. This area traps moisture in a pocket above the plenum chamber and also in the windscreen opening. Here I have had to replace the opening and part of the dash as well as the usual piece needed on the cowl. I use a combination of oxy welding (for the screen opening and dash ) and mig welding( for the cowl area) . Notice how well the moulding follows the contours of the screen opening. This piece was formed on the shrinker stretcher and the cowl piece was formed seperatly. All is metal finished , as I hate doing copious amounts of boring bog work...