aftermarket gauges

[tmontague]

I'm looking to install 3 aftermarket gauge on the dash above the steering wheel.

The 2 gauge that I know I will be for sure installing are oil pressure and vacuum. I have an ultragauge for coolant temp and voltage.

I was originally going to go with oil temp as my 3rd gauge but recently started thinking about using fuel pressure as the 3rd instead. My reasoning is that oil temps generally follow coolant temps pretty well and the point of these gauges are to keep an eye on how my engine is doing and spot anything wrong before it becomes catastrophic.

I feel that fuel pressure would be more beneficial and allow me to more easily trouble shoot down the road than oil temps.

What is everyone's thoughts? Keep in mind my engine is NA and will likely always stay that way.