I saw the car recently just last Saturday. There was no secret about it. It was wide open for everyone to see. At first glance it looked like a T2.
(Same motor/ diff layout; same style alum. bulkhead for easy maintenance)
I don't think there will be much parts carried over from the TC4 if any. As to whether the new parts are backwards compatible to the TC4, you guys can speculate on that.
