You aren't likely to find any...Sorry, I have looked and looked. The problem is being universal to 6.5 speakers. They vary wildly in design, tweeter depth, screw holes, and even OD. Unless you have speakers that you just love and really want to keep, get on e-bay and look for some speakers with plastic grills(doesn't have to be marine). Pioneer makes a good and cheap set, as does Polk(their MB series). $30 to $60 a pair would be typical. Not to bad to clean up your boat and cure your metal grill aggravations...
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