lol, hvac? I've got none. Well, heat yes but no ac. Bare bones. I'll check em out.
I mostly need it to vent well when sleeping or loading as it's a sweaty job, especially in the south.
This was my first and only major modification to a vehicle, back in 1997. it was a triple decker when you lifted the poptop. I miss it a lot, but it was too short to fit my robots.