53 flatbed,
I think your question was fairly obvious to most folks. I have copied a previous post with some info about which solenoid starter will work with your engine.
Your choices of solenoid starters are:
1949-54 passenger if you have a 6 volt flywheel
1955-63 passenger with 6 cylinder, 12 volt flywheel
1960-62 truck with 6 cylinder, 12 volt flywheel.
(thanks Pre '68Dave)
Stuart
