Quote Originally Posted by parenfroe View Post
My first question for anyone's input is how much room is available on the inside of that Nav hole--maybe someone knows the approximate depth?
I can't give you a precise measurement at the moment; this is the gauge that many of us have mounted in the square. Probably 1.50" in depth and then the radiator is very close behind it.

https://wingstuff.com/products/3760-...ted-volt-meter