Getting super close. Flashed base ROM today and fired it up after getting most of the engine bay back to stock and everything was spot on, super smooth.
Finished wrapping the exhaust bits, prepping Wastegates and jacket is fitted to Turbo. Ended up going with the red springs on the WGs (~6 PSI) and will fit an EBC in another week or two.
Tomorrow should find out definitively whether this kit works with an RHD. Both from Filter & Turbo discharge pipework aspects... not nervous at all...