ORIGINAL: lear4406
This is one mod I will be doing and like most things I do I research it to death. I too like the Mopar but there was another that had dyno proven 15 HP increase. It seemed to have a bigger filter and bigger diameter.. But was made of plastic. I seem to lean towards the polished aluminium... it looks really nice under the hood.
Most of the time aluminum is louder. That seems to be the main reason most are made of abs.