Which AC/heat system and why?

You're in Arizona and need some serious A. C...
I've installed many, many vintage airs in Chevy's and talk to them plenty of times and had my share of problems with their Chinese parts and they can't give an answer on how many BTU's but I would think probably 13 or 1400...
People like to spend 15 or 16 or $1800. Because they think they're gonna be plug in play which i've never had one that easy...
I personally installed the 23000 Btu cold master set up in both my power wagon and my duster and couldn't be happier with them..
I guess they call it a knee knocker because if you crash, I guess you would hit your knees. But I've had one installed in my duster on the passenger side and it never came close to anybody's knees.
I know they've raised the prices a little bit but I paid 475 for my duster unit. And I made my homemade bracket down in the power of staring area for the compressor... In the power wagon , I got the heater as well , which was specifically a heater core inside a box with some fans that blew out four holes and mounted it underneath to dash with vents going out of it ... I paid about 600 for both...
It comes with everything you need. The condenser, the compressor the dryer, the evaporator all the housing, a wiring kit and a pusher fan to cool the condenser which vintage will not have that...
Call omar at coldmaster in florida..
It won't hurt to ask him questions..
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You can borrow/rent the vacuum pump and the gages from the parts store.. I bought my own stuff at harbor freight..