I've been running my hood pins about 1/2" above the hood plates and the cables fed thru the grill with some foam centering the cables in the two grill openings since the early 80's when I bought a new O.E. Ford Set. They were not cheap to my then 19 year old self, so I did not want them rubbing anywhere including my new paint job.
They only touch the front edge of the hood trim and the snap rings occasionally touch the inner top surface of the S.S. hood plates (there are marks, but being S.S., nothing other than shinny spots). When they do touch is out driving at speed if the wind catches them.
Running them thru the grill certainly is NOT Ford Spec therefore the Concourse Correct crowd would not approve, but pulling them down and retaining them in those two locations in the grill make them curve nicely around the top of the hood and symmetrically towards the center that is pleasing to the eye and my OCD.
I'm probably the only one in the world with my '69 hood pin cables running this way ... about time I share !!
Doug