Be sure to check out MikesXS for cam seals. Seal dimensions are shown on the surface facing you. This dimensions are usually opposite the spring side of the seal. There are two different thickness for the cam seals. The narrow seal is SSD number, 25-40-6 is for the earlier models (before TCI) The reason for this is the locating pin for the contact point cam rotor and the advance mechanism on the opposite side. The thinner will ensure proper sealing and not interfere with the locating pin. Here is the link for MikesXS early model cam seals. https://www.mikesxs.net/camshaft-seals-pk-2-sdd-25-40-6.htmlEverything was in polish. It didnt specify how many or I didnt read it well enough. Either way, it’s not tour max, or what I need, and I’m not fucking with an ebay return to poland. Guess I’m still in the market for cam seals.