Installing a Vintage Air unit,few questions. Any tips?

[TX58]

Getting ready to install my vintage air unit ( bought it last year so its not the nicer redesigned unit) and had a few questions,also open to tips and pointers from anyone who has installed VA. It's going in my 58 Apache

What's the best way to run lines thru firewall?
I would like to use the existing heater hose openings.

Where can I get grommets for the new hoses/lines going thru the firewall?

I would have liked to use one of those inline fitting pieces that I've seen on custom cars but wouldn't that involve more fittings and custom lines?

What's the best way to route the hard lines up front? Attach dryer?

Wire on compressor? Is that for pressure switch? Where does that mount to?

Also heard that the included plastic glovebox doesn't go in or fit,is this true?

Any pics would be greatly appreciated.
Thanks
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