I used to have a number of these parts.
Sold them to enthusiasts. I imported a B21ET ign dist from Sweden.
Only B21ET/FT genuine part I have left is the oil cooler adapter plate and longer threaded rod to suit (in pic next to oil filter. Plus matching Pirtec hoses and fittings into 740T oil cooler. - It’s Available
I still use the T25 turbo exhaust manifold. (Garrett).
Spac in Yass also had one and sold the manifold and Garrett turbo a few years ago.