since you have the AAN engine,you dont really need the inlet manifold.Your plans seem fine.Get the cyl head ported,get the exhaust manifold with the T3 flange,turbo choice is spot on,and a bigger throttle valve will not make a difference all that much,but you could try it.Surging is caused by the turbo and the size of the throttle body will not affect it all that much.
As for intercoolers,get a good one and dont forget to get an uprated clutch kit.You will definitelly need it!!
As for intercoolers,get a good one and dont forget to get an uprated clutch kit.You will definitelly need it!!
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