I have been considering changing the three doors on my daughter's 90 300 tdi to Puma doors. One of the things that was putting me off doing this, (apart from the cost ) was the number of items involved to get the complete door fitted out. Just making sure you have everything would be a logistical nightmare! There is a company in the U.K. that supplies replacement doors complete. This includes window glass, winder mechanism, door card, mirrors and hinges. Looks expensive but you get everything you need and all it needs is painting. The rear door needs the spare wheel carrier ordered serarately. Not 100% sure on this project yet but it gives me another option. Here is the link for anyone interested.
Land Rover Defender Puma Built Up RH Hand Front Row Inc Door Card Door SP Panels