I would paint mark it at the very least to see if it moves. It doesn't look like it has moved yet, however.
I haven't actually done a damper on the 2ZZ, but it doesn't look harder than any other transverse engine based on the engine having a chain and a keyed crank/crank sprocket.
It's the keyless cranks that are really difficult.
I have an ATI damper on a Mustang, but the main reason for doing that was to add a dry sump system.
I would guess that replacement looks like:
remove fender inner liner
loosen the damper bolt with a good impact wrench
jack under the accessory tensioner
remove the accessory belt
remove the damper bolt
use a puller, if necessary, to remove the damper or get it started coming off
push the new one on
find the torque spec
install the bolt
have the car in gear, clutch out and someone with their foot on the brake
torque to spec
Last edited by Roundabout; 03-08-2018 at 03:34 PM.