Great videos, thanks for sharing. I am definitely impressed with Team Tinyvette, especially since my first car was a '71 Opel Manta Rally. That Manta had excellent handling, but I doubt that it could have made it to over 100mph. The engine always sounded like it was going to come apart at anything over 60mph. Maybe that's just the way they sound, and there was nothing to worry about. The drivetrains couldn't be very much different between the Mantas and the GT's.
I grew up in St Louis, MO. When I was a teenager, there were a lot of Opels running around STL, and I've always had a soft spot in my heart for them, even the funky Kadett sedans and wagons. There was one shop in particular that was the "go to" spot for Opel goodness (I've long since forgotten the name of the shop). Whenever I see an Opel for sale locally, it always causes me to think about buying another one.
Anyway, the videos are great, and give me a better idea of what to expect next summer, in my inaugural trip to Bonneville. The truck I'm building will compete in the H/DT class, which will be a little slower than what you achieved in the Opel GT. I found it interesting to see that you were pretty close to top speed after the first measured mile (107mph in the second video).
Keep up the excellent work, and thanks again for the videos.
Steve.