I am trying to locate a correct engine code decal for my 1970 SCJ Mach one with drag pack and production date of 9/69. I have included a picture of one that I had in my basement. For what its worth, my coil tag shows the number 424 A. Most of these tags for the 428 SCJ have either an S or T suffix. I would like to learn how to read these tags. Thanks!
