I just purchased my 2008 Shelby GT 500 and had my Pioneer D3 installed, noticed some noise from the rear window speakers. Look at them from the trunk, looks like they forgot to upgrade them? They are the standard, paper speakers I noticed that the new thing, (for me) are the component speakers. Any car audio experts that can help on the selection of some good speaker replacments, and can I go with the component speaker? I am currently looking at Infinity Kappa 682.9cf Thanks