On my '51 there's one weld nut on the cowl that matches up with an oblong hole on the hinge, and two weld nuts on the hinge, matched up with oblong holes on the cowl. Here's a picture from the inside. You could accomplish a similar thing with a weld nut and enlarging the hole in the hinge.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.