I installed a water temperature gauge in the console area you described and had to use a 1 1/2 “ Equus unit. I still have the 2” Autometer gauge that was too big.
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I don’t think there is enough room for a 2” gauge in that area. Also, there is a bracket behind there that limits the length of the gauge you can use . I machined a spacer so that the gauge sticks out about about a quarter inch or so.
I got a little more room behind the console on my other swap by placing the gauge more toward the center.
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I hooked up two sensors to the gage. One in the engine block for water temperature , and one in the transmission pan. Wired a switch to flip from water to trans fluid temp. Hope this helps some