My Step-dad had an Opel GT, red of course. The One that resembled a small Corvette. It was really fun to drive......................
We had a local drag racer who ran an Opel GT as a funny car way back when. I think it had a Buick engine. I can’t remember his name but he raced it at Etown in N.J.
I have a cousin who ran his Opel Kadett down the 1/4 mile at a long gone drag strip in Flemington, N.J. I think it actually ran as fast as 27.00 seconds. It may still be running.