When i put the gt40 upper and lower intake manifold on, are there any other parts that I should get that will really help? Right now its all stock(no air silencer). Would a tb/egr spacer help the most, or a maf?

I plan on just changing up intake parts, im not touching the cam or heads yet.
thanks.

 

a bigger tb would help you are eventually going to have to do a head and cam swap for more power