I've noticed three different markings on the spacer, or sleeve, used in 65-66 NOS C0DZ-5A486-B strut rod end link kits. 1st version has no markings, 2nd has an 'Fm' script stamped parallel to the bolt axis, and the 3rd has an 'Fm' script perpendicular to the bolt axis.
Are any of these considered more assembly line correct or does it matter?
Thanks,
Dave