Didn't find a thread for this car, sooo ...... 4 were built: GTP1, 2, 3, 4 https://en.wikipedia.org/wiki/Howmet_TX .
That was built by a French company in the USA (Chicago area Libertyville). That link does not have accurate info.
Not according to the first video in the second post. Bob McKee was the builder and he is interviewed. Regardless, I had never heard of this car. Its awesome that it actually won an endurance race.
