4"/5"/6"/6.5" inch Audio Speaker Spacer Adaptor Ring Bracket Mounting Adapter | eBay
Metra 72-4568 GM Speaker Plug GMSB-345 5-1/4" to 6-1/2" speaker adapte – absoluteusa
Car Audio Speaker Accessories Parts 6X9 to 6.5 Inch Cast Aluminum Adapter Ring Speaker Mounting Spacer for Toyota Camry - China Car Audio and Speaker Accessories Parts