this is exactly what you want:
Stealth Automotive. Edge Insight Multi-Gauge Display
with the egt probe upgrade youll be able to read egt's, trans, boost and a few other usefull things from this....
we can also get you a pod that will mount it onto the pillar
let me know if you have any questions about it
normal readings is
trans anywhere from 140-190 try to keep it under 210
boost with a tuner you should see mid 20's
pyro anywhere from 800-1200
-Raul