Why aren't 1968-73 Opel GTs worth more? - Hagerty Media
1973 Buick Opel GT For Sale | GuysWithRides.com
1971 Opel GT 4-Speed VIN: 772418243 - CLASSIC.COM
Opel GT Concept proves GM still has affordable sports cars on the brain - CNET
Opel GT European sales figures
Opel GT
1971 Opel GT For Sale | St. Louis Car Museum
Collectible Classic: 1968-1973 Opel GT
Why aren't 1968-73 Opel GTs worth more? - Hagerty Media
1969-73 Opel GT: GM's International Sports Car - Old Motors
Opel GT Concept Official Photos and Info – News – Car and Driver
1973 Opel GT | GR Auto Gallery
Opel shows off GT sports car but says a production version is not planned | Automotive News Europe
Opel GT - Wikipedia
1971 Opel GT For Sale | St. Louis Car Museum
1970 Opel GT – The European "Baby Corvette"
OPEL GT Specs & Photos - 1968, 1969, 1970, 1971, 1972, 1973 - autoevolution
Opel GT Classic Cars for Sale - Classic Trader
1973 Opel GT | Auto Barn Classic Cars
Opel GT: Buying guide and review (1968-1973) | Auto Express
Opel GT - Wikipedia
