I had a GT6, as well. It was a screamer.
I rolled it over twice when I hit black ice coming back from a ski trip. The entire car was a shambles, but it started up, and I drove it home. The insurance company totaled it.
Second car was a 74 Spitfire, bought from a used car dealer in the Navy town of Norfolk. What a piece of junk!!! Threw a rod after 11 months. But it was sure fun to drive while it ran!!