I'll take a few pix later this week when it's done. I've got one installed, which meant I could remove the other bolt and drill the second hole -- a royal pain. Now, I'm just waiting for the threaded tube. I could use threaded lamp rod, but that will rust. So, I'm using stainless steel thread pipe that is the same size as the lamp rod. I'll take a picture of the parts for the second one before I install it.
Of course, this is only for indirect cooking. I wouldn't use any thermometer probes for direct cooking, where grill temps are going to be 600+ degrees F.
I did a cook last night with a thermo probe through the first inlet I installed. The thermo angled up from above the burner tube to just below the grate. Perfect place for reading temps. With charcoal baskets on either side, cooking and measuring temps in the middle, I was reading 360 to 390 degrees. Dome temps were 75 to 100 degrees higher!