I couldn't find a cowl 'hat' specifially for a '70, so I used a patch panel from an older model. I really did not want to take the entire cowl panel out, so I just cut out a section, cut the patch to fit and installed it, then welded the top part back on. Fortunately on the '70 this is all under another panel anyway!
Old cowl hat removed and new patch in place
Using butt-weld clamps to line up the edges with the right spacing
Tacked in place
My welding skills leave a lot to be desired, good thing I am good with a grinder! :)
Cowl hat completed! Coated with POR-15 and seam sealer. Ready to put the top back on.