Like I suggested before, you should run it with the turbo you have & exhaust manifold.
Nothing is wrong with the turbo, correct?
I am pretty sure you did not max it out yet w/your old combo.

Not all sure the SPA manifold will fit in your chassis?

If you do use it,(the SPA manifold) you might need to run a pipe from the SPA manifold to a relocated turbo position.

MBHD


12 port SDS EFI