Gearbox output and shifter shaft seals

[Hillbilly Bike]

Hi, anyone have the Honda part numbers and a place to buy good seals? Thanks

[Superdukerider]

Output shaft parts listed here

https://www.cheapcycleparts.com/oemparts/a/hon/506c9c53f870023420a3ec6b/transmission

[Superdukerider]

Shifter side parts are here

https://www.cheapcycleparts.com/oemparts/a/hon/50540d82f870021c54bed93e/pedal

[Hillbilly Bike]

I don't see the gearbox seal listed, is it part of the bearing?
Cleaned off the rear of the engine. Ran the bike for 10 minutes, let it sit overnight...It appears the oil leak starts at the rear cylinder base then flows down near the the sprocket area.. No big deal, just fix it...