Since the car was completely empty I also took out the carpet. Sadly both front seat mounts again have some rust, that really is the weakest spot on a Sierra.
And I also started to modify the bulkhead for the aircon vaporizer.
Removed the sound proofing.
Measuring what needs to be removed.
And cutting up the bulk head to make room for the vaporizer.
Now the vaporizer fits in.
After that I also made the top hole, which is needed for the fan to draw outside air in.
And the holes from the engine compartment.
