I have some detachable side plates for a sissy bar that has approx. 9 1/4" on center mounting holes. Trying to determine what model they would fit on. I know they are not for a Switchback it has 7 1/4 o.c for the mounting pegs. I don't remember what the spacing was on the Low Rider I had so I can't rule out all the Dyna's. Thanks for the help.