OK looking at your measurement if you moved the tape up to the door skin it would be in the 13" range...that's about where I'm at. Fitting a set of fiberglass fenders to my 33M project. The car is channeled and raked so the front end drops down into the fenders ...plus I extended the hood by 5" and laid the radiator back. Increased the wheelbase requiring me to lengthen the running boards at some point. Will most likely cut a couple of inches off the bottom of the doors to allow mounting the running boards higher...my Winter project.