In my quest to reactivate the air conditioning, I started on some of the plumbing. I don't like to sweat so I thought I'd utilize the original aircon of the Cuda. Luckily none of the previous owners took it out, so all of the components were still in place. These are amont the last parts that were still untouched. A thourough cleaning, some sanding and a new layer of glossy black paint let them shine again.
Finshed cleaning and restoring the heaterbox. All the metal parts were taken out, the rust removed and painted, all the foam was replaced and all the rest was cleaned up. I will see if I can also replace the vacuum lines. they dont't look bad but just in case...
One of the screws that secures the heaterbox to the firewall broke off, so I'll have to fix that somehow, other than that, it's ready to be built in.
I had to assemble some or the parts several times, as I did not recall the exact order in which they came apart...you can never take too many pictures...
Finally I attacked the heaterbox on a very hot day, how fitting! The box has been laying around for quite a while and I've been reluctant to go at it because it seemed such a complex part. Turns out, it's not rocket science after all. 
The box consinsts of two halves, the project is mainly to seperate the two parts, clean everything, replace the worn out foam seals and put everything back together. The new seals come in a handy kit, it includes almost everything you need in one bag, I used high performance double sided adhesive tape to secure the foam. 
One half is done, the plan is to finish off the other and put it back in the shelf, as it will be one of the first parts to be put back in the body once it returns from the shop.