Couple thoughts on the plan for the new setup.
The old primary mounted to the a/c compressor bracket with the center intake pipe routed over top of the bracket. This made removing that primary a bit if a pain because the intake had to be removed every time. Not too big of a deal, but add on water injection and all the reference lines and it got aggravating.
Secondly, the intermediate exhaust pipe was welded directly to the mount, so if I needed to remove the secondary the entire turbo setup had to be removed.
Lastly, getting the spring out of the secondary gate was annoying, the way I had it positioned made the screws a real pain to get in and out with the intermediate pipe in place.
The plan this time is to route the center intake away from the primary mount and use a v-band connection in the intermediate pipe so the turbo's can be removed separately if needed. Then hopefully there will be enough space to re-position the secondary gate.
I should have parts to finish the plumbing up by the middle of next week.