Love the alloy floorpans/bulkhead, wish I'd done that with mine. Would've saved me a fortune in Hammerite rattle cans to keep the rust at bay.
Those internal door handles look like S2 or S3 Land Rover jobbies to me -
http://www.ebay.co.uk/itm/Land-Rover...item33800da0fe
t'other side is also available on ebay.
Good luck with the moon rover stage, let's see this one on the road in double quick time!