In this video we remove the entire rear part of the engine to get to a single bolt. We also talk clearance and manifolds. See the entire 1.8T Nissan Micra project playlist here - • 1.8T Nissan Micra Follow me on Instagram! - / cgten.uk
The stuff underneath the manifold is the secondary airpump. Most just bin it and code it out. The valve that is still underneath the BAM manifold is your n75 if I recall correctly. Might want to look at some AGU stuff as they are loads simpeler without all the emissions crap!
Have you considered using a water to.air charge cooler mounted above the gearbox? Retaining the bam inlet, and have the turbo outlet come out towards the passenger side