A few months ago, Tokuboo.109 (IG handle) posted pictures of his zenki with an RB30 in it! I was surprised and intrigued. RB30 is an Australian motor.
The only other person that brought up the engine and showed pictures of it in a machine shop being built was William Porsche.
I asked about sharing the pictures and he asked me to wait until it was complete. He messaged not to long ago and said it was okay to share!
I met him in 2017 at Fujinomiya Leopard meeting.