I ordered and received the K/N intake box and have a local machine shop just fabricating some tubular bends for me to powder coat. The intake cost me $300cdn and the piping and coating will run me about $100. I figure this way I get the intake hp and the clean look of matched to paint piping witout the black plasticy look.

I've run intakes and pulleys and exhaust systems on 4cyl imports. It does make a difference, not sure how much notice would be on a big engine, although it won't do the car harm, but it will improve flow and response to the throttle.