Rear seat back rest

[Alansut]

I would like to buy a backrest similar to those on many trikes where the "box" is on the top of the boot (trunk I guess you call it) of the back section and it curves round to form arm rests.
There is no chance of buying such an accessory here so I realise I need to import it. The trike is a Lehman Fat Chic base on the Valkyrie, made in 2000.

Any ideas who sells them ?

 

[427dave]

The Harley Davidson tour pak may fit.