Good luck !!!! Last time I looked that would be around £1,000 if you can get one, prob easier to go to South Africa on holiday and bring one back !!! Hopefully I am proven wrong !!!
They are out there but more likely will require a bit of work.Buy privately as I found all the traders were rip off prices for poor condition sliding doors . This also applies for cab doors.
I have the fibreglass trim that goes on the inside to tidy up around the cut out, new copy of the Devon Moonraker trims factory fitted if you need one