Have an 04 GTP. Fixed the dreaded broken spring problem in the HUD on Saturday (by the way, only took about 1 hour with the great online instructions). But in the process, the plastic dash parts from end to end, that fit up against the windshield. broke into pieces...I guess the sunlight over the years made them brittle. Where can I purchase this plastic piece of the dash? It goes side to side across the car, including a square piece that covers the HUD.

Thanks much.
Brent