I wouldn't remove the door lock mechanism in the stairwell.
One of MCI's better ideas, actually.
Hmmmmm. I'll admit she was whistlin pretty good on the way home if the ratchet strap holdin the door shut wasnt tight enough. And the seals are, uhmmm, not so hot. I think remake a new door handle push pull rod. Ill have to get some good seals and better align the door.Then we'll see if we can do away with that evil door lock.
I was looking through the floor vents at the evaporator. It looks like the core unit, forward of the evaporator, is the heater core?? Im asking because it looks like its all one unit. Are they pancaked together?? I saw what looks like a bleeder near the filter assembly, i'm assuming its a coolant bleeder. It also looks like the bulkhead behind the fuel tank is just ahead of the HVAC system. If so, plenty of room for an additional evaporator and some axial fans, and possibly enough for a swamp cooler.