After an extensive search, and a beer, I found a sketch I made of the holes for the letters. I touched it up by darkening the hole positions, and verifying some measurement from my 66 GT. Then I scanned it. The original sheet is B size, 11 by 17, so two scan passess had to be made. There is a measurement reference from left to right in inches. I removed some notations as to where the actual holes should be to in a straight line. To locate the holes on the fender, I would lay down a strip of masking take to mark before actually making a dimple and drilling.
The -91 and -92 are the latest version done in Photoshop. I start with -99 and -98. Just a technique I use.
Jim