Air Gap / Autoguage Question

Here you go, you still have to order fittings for it.
This is what I am going to use on my LD4B intake, I checked it and it is the same as the moper thermostat.
I drilled my LD340 for a fitting, not a lot of meat in that area.

http://www.summitracing.com/parts/mor-63422/overview/