Being a manual, we very quickly ordered new R34 gearbox (From Nissan) and remaining parts from Kudos motorsports. Would highly recommend the team there. Ultra helpful and quick to share advice and upgrades.
We are in the middle of taking the Auto out (Genuine 94,000/kms) and putting the Manual in this weekend.
Part 2 of the build will include likely a Plazaman Intercooler and Plenium, Hks Exhaust with Tomei Dump (ordered).