The dash caps are an "economical" solution to the common cracking problem of our dashboards, but there are some drawbacks. The fit is close to pefect, but not perfect. It helps to sand or grind down the crack ridges so that you have a flat gluing surface. The dash cap has speaker grill holes molded into the top, for those cars with dash mounted speakers, and to access the speakers in the future would require carefully "ungluing" the dash cap.