The Performax gauge line from Isspro are more expensive than the EV2 since you need the ESP for them to run.

I prefer and sell Isspro EV2 at a 4:1 ratio to the Autometer line. They are a great gauge the is made right here in Oregon and not overseas which is also very nice. If you have any questions give me a call and we can talk through it all.

Here is an EV2 kit we have that has everything you will need for install.

Riffraff Diesel: RDP Triple Gauge Kit

http://www.riffraffdiesel.com/mm5/RE..._Gauge_Pod.pdf