Got a spare PS ram recently and just noticed it is about 1" shorter than the OEM (I think, 8Axxxx date and Bendix stamped) off my 68 S code. It has a ton of paint and did not wire wheel it yet to see if it has marking, other than a large "1" and "L" stamped in the flange but the inlets.
Was a second hand unit the seller got form a Mustang shop going out of business, o not sure specifically what it came off.
Were 65-66 shorter than 67-68? Anyone seen the "1" and "L" before? Loaned them out to a friend having issues with his PS as test units, so no pics.