904 help needed I'm confused

??? My kit came with 4 and I needed 5?
Like 70aarcuda said it was a different story once I opened it up. That's why I said try and get the kit local. Humans package these kits.... The tail shaft seal not even the transmission wearhouse people (who see everything) could figure out what it went too..
The older rear seals were 2.25 od. Around 68 up were 2.375. National 8935S oldies.