I have some money saved to get my '03 V6 a cold air kit, but I'm having trouble deciding on which one to get. What are some good brands that I can get at a good price? I've been seeing masses of cold air intakes on eBay for around 50 bucks. Many don't have a brand name listed, so are these low-quality junk from imitators or are they legit? One I've seen listed on there is from Mugen. I know they've done a lot of great things with imports, and even though I really hate the idea of buying parts from an import company, money is a huge factor, because I'm also planning to convert the exhaust to dual with the kit from Ford Racing. I want to spend as little money as possible but I don't want to end up with an inferior part. Thanks for any advice you guys can give.  

Most of those cold air kits on Ebay are from ProCarParts. I have a ProCarParts cold air kit on my 94 Cobra and love it.  The one i have is made mostly of aluminum which doesn't rust like the brand name cold air kit i had years ago which was made of chromed steel tubing.