And for the price, it's hard to justify it. If you want good power gain, you'll need to go F/I. Fortunately and unfortunately, the SVTF is design pretty much to the limit of the Zetec engine N/A. N/A mods net very little and can get pricey.
I have the Jay Racing intake on my car and its a great piece, they put a lot of work and research in to the part. However if you are NA there is no point in getting an aftermarket intake in my opinion.
I bought one for a primary reason of going FI and not worrieng abot the stock plastic blowing to pieces!