The fish that I am looking for is about 3-5/8" long, with 1-1/2" pin spacing. Pretty sure that is the correct one for a '69. The car I have came with no fish or holes for them, was re-badged as an "S" by the PO.
Feel up behind the fender where the fish goes most likely you will feel the filler. If the fender is a correct 69 you should be able to reclaim the holes. Your dimensions are correct.
