Looks just like the one on page 7, great work. Looks like you've spread the two middle runners a bit to avoid fouling the mounts.
DJF280 is on the money, The reason to use plate and not build a tubular merger is cost. And either way a tubular merger would push the turbo out at least another 80mm.......into the strut.
I have thought about scalloping the tower to allow more room but I'm not that keen on that idea at the moment.

