Hey, I recognize those Earl’s Temp-A-Cure oil coolers! I have the same one and mounting brackets on Project S2000. Remember, keeping oil temperatures in check is one key to reliability.
In a car as serious as this track car build, a fuel cell is a good idea.
The interior is relatively simple with a few key gauges added. Recaro seats paired with Sabelt harnesses keep the passengers in place inside the protection of the cage.
Here is some slightly vintage German go-fast machinery.
As you can see, the interior is ultra-clean with Sparco seats replacing the factory buckets. A beefy rear roll bar adds some insurance and stiffness.
This beetle is from the same parent family, but modified for a different purpose. It would probably be fun to take out to the wine country.