07-26-2021 06:51 PM
Hi there, Rorion,
Thank you for stopping by our community forums. It looks like you're going to be giving your HHR a great upgrade. I would recommend scheduling a free in-store reservation with one of our Autotechs to get an estimate on getting these speakers replaced, and installed. They'll be able to help you get an estimate for both the labor and any additional accessories that may be required to get this completed.
Please let us know if we can help with anything else!