Oh yeah, one more thing. Don't expect to spend the $600 and all of asudden have more power under your hood just because you have "RamAir". Bascially what you are getting is pure "ahhh and ooooh and some serious coolness factor. I liken it to the fold down rear seat, expensive, useless, a ton of cash, but, lot's of gawkers and thumbs up!
If your looking for power, you could certainly get more for your $600 than from adding RamAir pans to your car. But dam, they sure look cool!