The left car in the Picture is actually a 1986 Corvette C4 Convertible:
They put the body from an Opel Kadett E on top of it and Callaway did some performance upgrades to the engine so it makes 306hp.
The Opel Kadett E was basically in the same class as a VW Rabbit and a popular car in germany back in the days. (Where this car has been built)
Some german articles:
www.autobild.de
www.autobild.de
The same guy "Artz" also built similar cars like a VW Rabbit MK1 on top of a Porsche 928. (I knew about that one but i think the Cordett is even cooler...)
Unfortunately only 1 Cordett and only 2 Rabbit 928 have been built.
They put the body from an Opel Kadett E on top of it and Callaway did some performance upgrades to the engine so it makes 306hp.
The Opel Kadett E was basically in the same class as a VW Rabbit and a popular car in germany back in the days. (Where this car has been built)
Some german articles:

Artz Cordett: Dieser Opel Kadett GSi ist eine Chevrolet Corvette - AUTO BILD KLASSIK
Der Artz Cordett sieht auf den ersten Blick aus wie ein Opel Kadett E GSi. Doch unter der umgebauten Karosserie steckt eine Chevrolet Corvette C4.


Cordette, Artz Golf 928 & Co.: Krasse Umbauten der Tuning-Legende
Glauben Sie nicht, was Sie sehen! Der Kadett ist eine Corvette, der Calibra ein Lotus. Gebaut hat sie Günter Artz. Wir treffen einen Sammler.

The same guy "Artz" also built similar cars like a VW Rabbit MK1 on top of a Porsche 928. (I knew about that one but i think the Cordett is even cooler...)
Unfortunately only 1 Cordett and only 2 Rabbit 928 have been built.