Here are links to what I bought/installed on my own.

For the Passenger seat, I got this, and it's perfect. from eBay:

• https://www.ebay.com/itm/224517225497

Also Ebay for Pegs:- https://www.ebay.com/itm/223555426287

Passenger Backrest/Luggage:

• https://www.amazon.com/dp/B09HSJ3M87?ref=ppx_pop_mob_ap_share