im confused there's a cfm air filter on ebay 4 a good price. but i can also get the PB air box for cheap. what do you guys think is the best option. i know some might say the cfm fits perfect but i think it look small in the pictures. i like the PB airbox but if the cfm is better or there is no performance difference in them then i would go with the cfm cuz it is cheaper. but i wanna know what you guys think is the best. Your opinion is much appreciated