Roy,
Nah the plenum came with a set of adapters to allow the rb26 rail to match up with the rb20 mounts.
In regards to updates..... Intake manifold is on the engine, Front turbo manifold is bolted up rear manifold pulled a stuf out of the water gallery and i'm trying to fix this up now.
I've been trying to get ahold of Paul for the past fortnight to get this sorted.
Cheers.