Scosche SAU56 Convertible 5.25″ – 6.5″ Universal Speaker Adapter-Sold As A Pair – Volunteer Audio
American International HSB524 6.5" - 6.75" Speaker Adapter
5x7 to 6x9 Harley Boom Speaker Adapters | Scosche
Metra Speaker Bracket for Select 2014-2016 Chevrolet Silverado Black 82-GM2 - Best Buy
Car Front Rear Door Speaker Adapter 6.5"-6.75" Spacer Rings for 2008-2020 Honda Civic Accord CRV, Acura - Walmart.com
DS18 JC-S Speaker Connector Adaptor for Selected Chrysler/Dodge/Jeep Wrangler.
Amazon.com: Metra 72-6512 2 Pin Rectangular Speaker Connector for Select Chrysler Vehicles : Electronics
Amazon.com: METRA - GM 2014-2020 Speaker Adapter Kit - Front (82-GM4) : Automotive
Amazon.com: XtremeAmazing Car Stereo Door Speaker Adapter Mounting Plates 6.5 Inch 6.75 Inch 165mm Stand Ring Kit with Wiring Harness Cable Set of 4 : Electronics
DS18 PRO-TWR3 3" Adapter Abs Ring for Tweeters Perfect for Jeeps/Chrysler. Pair ( TW2.5 , PRO-TW820 and PRO-TWN4