GTO6429 | This 2-way custom fit speaker fits directly into the space for the 'factory speaker'
JBL Grand Touring Series GTO427 4" 2-way car speakers at Crutchfield
GTO429 | The GTO series provides a completely new musical experience in your car
JBL GTO529 5-1/4" 2-way car speakers at Crutchfield
JBL GTO 426 4" Two-Way Car Speakers Harman Set Range Rover Classic Rear Cargo | eBay
Amazon.com: JBL GTO Series Premium 4 x 6 Inches Co-Axial Speakers Pair with Patented Plus One Woofer Cone, Silk Dome Tweeters - Set of 2 Bundled with Earbuds : Electronics
ONE Pair JBL GTO 6x9in 3-Way Car/Truck front/rear door speakers 300 Watts Peak | eBay