what he's referring to is the plastic parts that go around the speaker. they go from the top of the speaker, down towards the base. I had the same problem on a grand am gt with some 6x9 kenwoods. I couldn't figure it out, so took it to a shop. they just took some pliers, and bend the metal downward all the way around until the hole was big enough. You could also take a dremel and hollow out the opening. These same 6x9 kenwoods, fit perfect in my grand prix with no modification though......