Fox: fyi, here are my “rivets” again: centerline is 1”. I purchased these reproduction rear fenders from Classic Industries in KC about 15 years ago. Those fenders had the braces and rivets already installed (w a CL of 1”). I’d drilled out the rivets before I painted the fenders and took the easy way out reattaching the braces with allen head machine screws, in the same spot...unpainted...I like the look. Good luck, Dave