Where to put Gauages?
1) Get a SINGLE pod for the a-pillar:
2) Put one gauge in the center console area (just cut a 2 1/16" hole in your TCS plate or get a TCS plate from a Trans-Am or convertible switch plate from a Camaro):
In my car I obviously did both and I used the Cobalt gauges (I then converted my stock lighting to match the Blue LED's) so I ended up with a Black/Blue/Chrome theme to my interior:






(My back seats are now matching black leather and I'm re-covering the doorpanels in black leather this weekend...)
I think the Cobalts blue LED would make a nice contrast to the red lighting in your car but here's a couple of other options:
1) Get a black faced normal gauge and add a red bulb (or red bulb cover which the gauges come with) to get red lighting... I would most recommend this gauge (It's black, has chrome and is FULL SWEEP which most tranny gauges are NOT):
Guage Style: Auto Meter Traditional Chrome
Gauge Type: Transmission temperature
or if you don't like the chrome...
Gauge Style: Auto Meter Sport-Comp
Gauge Type: Transmission temperature
or if you want ALL black...
Gauge Style: Auto Meter Z
Gauge Type: Transmission temperature
Here's and idea of how they would look lit:
2) Finally, and this is what I would do if I had a Trans-Am, you could buy one of Auto-Meter's II Series gauges, they light the NUMBERS up (like the factory style does but with LED's) instead of just a crappy back light and then try to make it red (take it apart, and add a red film or change the leds to red):
Gauge Style: Auto Meter Sport-Comp II
Gauge Type: Transmission temperature
Here's a pic of how it lights up:

Hopefully this helps...
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And to the OP, if you have a ton of money to spend, you could get a dual pod and throw 2 Aeroforce Interceptors in there, that'll cover your tranny temp, and 3 other things and you'll only have 2 guages. Or you could just do as Demonbird said and get a single pod or put it down in the TCS plate.
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