I just heard from a reliable PMNA source... that the factory optioned fire extinguisher, will be available to those that need to replenish/replace their factory delivered unit, or to those GT3/RS owners that want to retro-mount this unit on their driver's seat.
Check w/ your Pcar parts dept.

 

If it's the same as the one I have, just know that it is the white dry chemical type, not Halon.