Sounds like you are rebuilding rather than replacing the master clutch cylinder. I managed to find a $40 replacement cylinder on peach parts and just removing and replacing the whole thing was hard enough. Tight quarters under the dashboard. The replacement didn’t have a rod, so I didn’t remove the old one, it just slid in. I also reused the rubber boot. I have a ‘69 280S.
Sorry, the picture is on its side.

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