Pillion Seat and OEM springs for solo Seat

[Bulletman]

Greetings folks,
My C5 2011 RE is looking for her OEM solo seat "Springs" she is also looking to take a friend every now n then for a spin round the block, so also looking for a Pillion seat, which would preferably double as a luggage rack as well, but just a pillion seat would also work, Please look in your ...... . And see what you can come up with, appreciate the help and enjoy this beautiful Sunday morning.
Cheers,
Mark F