Thinking of mounting three guages in the din panel and i want the boost on a column pod but what other three guages should you have?

I have oil temp and air/fuel ratio as well as boost

Good choice.

I'd advise against oil pressure, just stick with temp.

bah ive got oil temp and pressure.

it was handy when my oil pressure light flew on while i was on the A1 as i knew it was the sensor

Voltmeter, oil pressure, and boost pressure.

Oil temp is totally meaningless, because it tells you about the sensor position, not the oil temp.

EGT is pretty essential for tuned motors.

Jase, are you reading those Japanese tuning mags again?