I've got the speedo, looks original to me?

It came with an aftermarket tach which I dont think I will keep (it was mounted on the column)
I have oil temp, amps, fuel gauges that I will keep, but will obviously ditch the water temp and the lbs/.Sq inch (psi for turbo possibly???) gauges that were installed for the watercooled engine that was in it.
It's a shame that the oil temp gauge doesn't match the fuel and amps gauges.

I also have a column mount indicator switch, what seems like a light switch (as it has a rotating function. ..dimmer? And has two pull out notches) and there is another switch which has is a three position rotating one, not sure what it's for.
The other is an aftermarket rear heater back glass flip switch which I might use for something.

So I think I will have Speedometer, amps, oil pressure and fuel, and then for the switches: indicators, headlights and the other cream colored one if I can figure out what it's for.
I also need to source a key for the ignition barrel, but they are only 15 bucks new from AVR so I will probably buy new, but I was thinking of putting in a security system and possibly a push button start and do away with the key altogether.....
Any input from you wise vw enthusiasts is more than welcomed!
Max