The factory stock rear view Mirror
in all 7th gen (2000 to 2005) model Celica is exactly the same. Part #87810-AA010.
If you were flipping through a Toyota accessory pamphlet and saw rear view Mirrors
with temperature and compass display, that is exactly what it was; an accessory pamphlet of many items that your Toyota dealer can install as "aftermarket" for you. The items are general and not specific to any year/model of vehicle.
Go to your local Toyota dealership and get a price quote for parts an installation. Also ask them whats involved in installing it for you, since the specific accessory you're asking for needs to be wired to an electrical source.
But, what many people do when they want to upgrade their Mirrors
(or want something other than stock), they install an aftermarket Mirror
right on top of their stock Mirrors
. Also, your Toyota dealership should have these for sale in their parts department -- less than $20 in flat or convex / clear or tinted.
Research "Broadway Mirrors
7th Gen Celica stock Mirror