So after finally getting the door panel off in an old GMC Safari van (astro van... price was right) to throw in my JBL woofers, I found the woofer mounts to be off significantly. Either the woofers are actually 6.75" or something goofy like that, or the mount is just oversized.
..Anyhow, the mount is riveted into the door panel with 6-7 rivets and as normal the grill in the door panel fits snugly over the foam ring on the delco speakers. Meaning I can't really move it forwards or backwards without some seriously work.
I was thinking about using plywood to make basically a ring that I can bolt into the speaker mounts and then bolt my jbls into with a bit of hot glue or a foam ring or something to keep it semi-air tight. It would have to be 1/4" or under. Any advice on the matter? Sorry for the really, really bad paint image... just wanted to get the idea across.