Cold air intakes do not really produce that much more power. You have to be careful with K&N air filters as they are oil soaked and the oil can affect the "Mass Air Flow" sensor. I'd stash the money for maintenance costs of the future. A set of headers will give more bang for the buck. If you really want to make a good investment add a 40000 btu transmission cooler like TruFlo.
https://kandn.com/dynocharts/63-9036_dyno.pdf
https://www.jegs.com/i/Flowtech/387/...xoCYRgQAvD_BwE