Superbird - REPLACE it with something new & better quality. Use a 4 ohm for a car radio. Check out the speakers from these guys - you'll need a COAXIAL speaker. They come in many sizes:
www.parts-express.com Sunroof… that site looks pretty good. Can you tell us what speakers you used? I have the 3 speaker dash in the e body so I am looking for a modern sound setup that will fit. In the back, 6 x 9 should be easy to select. I want to upgrade to a 4 channel system.
Any decent power speaker for the outer's will have a larger dia. magnet.
Factory used those narrow magnets.
Therefore you have to enlarge opening in the metal dash frame to accommodate.
Used some nice sparkomatic's on my 73-E & needed to modify metal below, but fit the grilles nice.
Center spot I just left old in not connected, not really needed with a 4 speaker setup..