I have a mechanical oil pressure and water temp gauges to install in my 91 se-r. However I don't see where I can safely drill the 5/8in hole in the firewall. If anyone has any suggestions or pics (that would help alot).

I'm currently installing a mechanical water gauge in my car. Would anybody happen to know where i should tap the sensor into?
*mechanical not electrical* thanks

You can drill a hole safely towards the top of the firewall. I dont have any pictures I can show you, but If I find any I will post them.

azg20t: I have my water temp sender in the outlet where the coolant comes out right before it goes back into the radiator.