Matt,
It's a 3rd revision, not a 3rd start, movings things more to the left, more to the right etc
There's no other RHD TT kit for the 370z as far as I know. Even if there was one, they all use different setups, turbo housings, waste gates etc.
HaydnH has his car at home, is not with us. Once the new manifolds arrive, we will ask HaydnH to bring the car back or we will collect it from him so we can do the installation.
I've discussed with the COO from AAM, so let's hope things move a little bit faster now.