the block off plates for the sr20 are the same as for the ga16de. Im not sure exactly which ones are the ones we need. The style and size are the same for the major parts. The manifold needs a standard plug, not sure of the thread or size but is same as the sr20 plug, for the intake side is what im not sure off for fitment as there are 2 styles.
plus it adds to the carbon in the throttle body and intake manifold. Me personally I dont like adding exhaust to the intake purely for the heat and carbon. Why would I go out and purchase a CAI and then add exhaust temp anything to the air being ingested. Before anyone does this though make sure and really read up on this as it does have a few things that need to be done to prevent it from going into limp mode.