Just found out a significant something about my D.
VIN 5992 was the LAST vehicle in the production line to have its door strap wrapped around the door handle.
After 5993 the strap was fastened on the door panel.
On to the works:
Brought back my evaporator core an the heater core from the shop after checking them for leakage and cleaning it with antibacterial foam.
In the mean time, I have all the interiors refurbished and applied new foam insulation.
Heater core installed

Blend door with fresh foam insulation. Had also to glue that flap. Somebody had opened hat in the past and broke it.

Again new insulation on the center console doors

All set up and ready for installation

LIKE A GLOVE!

Masked the housing connections to keep it air tight.

VIN 5992/Body 5697/Frame 6000/Grey/Manual/LEDs/HALOs/SPAX/DMOCO SS shifter/MOMO/Custom SS exhaust/K&N/SS: f.fascia mounts,brake+clutch lines+tank cover+heat shlds/Posi-quiet brake pds/Poly bushing: steering +f.sway bar +radius.