One of the swingarm rebuild kits would get you a LONG way towards getting it together. It looks like it has the needle bearing, bushing, and seal.
You are missing the hardened pivot tube and grease seal/caps and of course the pivot bolt and nut.
The pivot bolt and nut can either be purchased used or new OEM. An AllBalls swingarm bearing kit will include the hardened pivot tube and grease seal/caps brand new. Throw the bearings, bushings, and seals on the shelf for later!