Interesting.

If I heard correctly, that's a T3/T4 with a 50 trim T04E compressor and a 50 trim exhaust wheel on a T3 housing. At best that will put out about the same performance as the stock supercharger (and will be worse if the AMG supercharger is modified).

Your dyno is going to see a huge drop in torque once you start boosting past a pressure ratio of 2.0! You should be using two of those turbos.

What is going on with the turbo lag? A tiny T3 hybrid turbo on a 3.2L engine should be pushing 1 bar easy at 2500 rpm or less.

A lot of effort for....what, exactly? I don't mean to be disparaging, sorry.