OK, I'll start off by saying I HAVE done a search and found some information, but its not too clear. To the best of anyone's knowledge, what is the difference between the stock intake manifold in my 2002 2.0L Protege and the FS-ZE manifold offered on Corksport? Would it make more sense to buy the manifold off corksport, or just get mine ported and polished as one of my buddies suggested?