Thanks Gents,
Ok so couple of things tonight, first up was to not shy away from welding and play with new toys so it was to weld the passenger front door and the reward if i got it done was try out an ebay purchase delivered today.
How the door started after i had already cut it back the other week.

Took along time to get to this stage and get the repair panel i made to fit exactly, made it with the lips that folded over the freshly made inner skin. After the other days performance i welded it in sooo carefully, a series of tiny spots to prevent to much heat build up.
The rebuilt inner and the outer
mostly finished metal work

Just a bead of sealant across the seam as per original and who would know

Ok so the nerves of the night were reserved for todays delivered ebay item, fresh from an attic after apparently 6 years out of use but with a ton of spare parts electrical and pumps etc ...would it work.
I believe they didnt mention this install position in the Eberspacher manual but it seemed to work for me.

Connected it up, diesel in a mug and hit the switch, few wiring noises and then a ton of white diesel smoke which cleared and it ran like a dream. After a few restarts no more smoke and it ran for 15 mins with no problems. SO this is to be fitted in the engine bay and fingers crossed i have an idea how to get heat in the roof tent or Landcruiser which will do a little later on.
Cheers
Mark