I have just bought a 1989 Bronco from some idiot that didnt know to change spark pluggs. I got it for 300 bucks and only 72K miles, mud free. My buddy said i should get a K&N cold air intake but i wanted to make sure it was worth the 300 bucks. I just got done putting dual exhaust on it and it sounds great. Someone with the air intake can you please let me know if it worth it?