what would be the best cold air intake for my 04 mach ? I plan on keeping the shaker functional so it would come down to the jlt ram air, steeda, c&l, or the k&n fipk. so which is the best of these four and what would give me the most horsepower. I would also like add that it says the jlt will give the car 10-14 more hp, yet the steeda will give it 9.7. however the steeda is cheaper. is the jlt worth it?