Looking for Suntour Superbe Pro bits to complete this group

As title states, looking for a few more bits to complete a Suntour Superbe Pro group I'm piecing together for a 3Rensho frame I've got. Components must be in good to new condition. Looking for the later version stuff.

I need:

- 27.2mm seat post

- English thread bottom bracket

- Clamp-on...