Congratulations on the ambulance looks like you appropriately brought it back from the dead.
Thanks for the photos.
Re: contents of tray set. Is there any specific contents you are looking for? People here may be able to help. I have a number of templates for reproduction boxes etc. some were posted here but have been lost from the site. If I have some thing you need I can post. I will try to put back on site at some time in future (in the middle of exams at moment).
MD boxes and tray sets are something I would like to try and reproduce at some stage (postage to Australia of originals is a bit prohibitive.