I've done several searches but so far can only find info on first gen temp guage installs and my 2003 has just a water plug in the place where the 1st gens seem to have a threaded port (as far as what I can see in the pics I've seen). Does anyone know the best place to install the sensor?

There are several ports up on the top of the cylinder head that look like they would work and they are right next to the exhaust manifold. Not sure if that would give an accurate reading or not. Thanks in advance!

 

It helps if you spell gauge right . I found it, thanks.