Steve,
Just my . 02 cents worth, I bought my gauges, Westach combo(egt / boost) & dual temp and "A" pillar mount from Geno's. I have to concur w/Bushwakr as far as the slight obstruction. It's like everything else, don't realize it's there until you need to look that way.
As you can see in my profile I have the auto transmission in mine and at 1st I was monitoring my transmission temp going in & going out using both gauges, but have since re-wired one of the temp gauges to a dbl pole dbl throw switch. This way I can monitor both the gozinda & the gozouta from the transmission on one temp gauge and monitor the oil temp at the oil filter housing on the other.
So you can see I'm monitoring 5 different items w/only 2 physical gauges.
BTW, black face w/ white #'s and green bulb.
Do what ya gotta do!Oo.