Just to give a slight update.
What the OP stated is somewhat correct.
Firstly, there is no Illinois office to shut down. All 3 US facilities still exist and are operational. California, Indianapolis (electronics), and Mooresville (electronics) are all operational and open for business.
The number of people in the California office is reduced. This is causing inefficiencies in normal processes. Cosworth is committed to correcting these issues. This is one of the main reasons for the restructuring is to correct the problems for a better future.
It is also easier for a company such as Cosworth to handle inquiries through vendors as those vendors and distributors are usually the forward facing between Cosworth and the end user.
Again, Cosworth US is open for business. Unfortunately it may be a less than ideal situation.
The Subaru community is important to Cosworth. Thank you for your support.