A "cold air intake" is not going to affect your gas mileage. In fact, most of them draw warm, engine-compartment air. They're really just noisemakers on these cars. Your original intake does a pretty good job of drawing cool air from outside the engine compartment.Any suggestions that are known to fit? Looking for an increase in gas mileage.
If you can find or adapt a long ram intake like a Legmaker for your application, you might see a drop in intake air temperature, at the expense of a tricky install and making your future air filter changes a pain in the ass.