Sorry i read over it.. do you have more info engine/setupwise? This is the route i'm planning to go but with the efr 9174 guess it would spool up a bit earlier given it has a 74 turbine wheel if it was on your shop FC.
I'm planning to go with the 9174 but EWG since i already have a manifold and wastegates for it.

I ordered a 9174 with the AL housing but it can't be supplied till begin FEB, now i just need to sell my brand new 8374 ewg OR do some back to back testing on dyno and street with these babies..

 

You are going to have to do back-to-back dyno on those. It will be awesome.

 

Depends... if the 8374 isn't sold by the time i have the 9174 i sure will..