ok i was looking at the how-to's on the custom air intakes. Now the 2 different ways are to either stick a K&N air filter on the end of the stock air tube, or to customize even more and make an aluminum tube with the K&N air filter on the end. Is it worth the trouble of putting the aluminum intake on, or is it not that big of a hp gain difference... It says about 5 hp gain by just sticking the cone on there, with the aluminum tubing, would it be 10 hp gain or what... thanks for your help.