I got mine at
www.3n1autocomputer.com/buy_now_toyota.html for $130 (includes shipping). It is a special Toyota forum buy.
I got mine yesterday, but not sure how I want to mount it. It won't fit nicely in the cubby above the shifter.
There are some similar guages out there that are round (and a bit more $$$) and then you could use a round gauge pod...put who knows where to install it...maybe on the pillar.