Will this make any difference to the performance of a 360 GLT B200E....? Fuel economy, speed breathing...sound.....etc. Can anyone help

only changing the filter wont do anything, except making the car "breath" easier. sound will be about the same, and economy and speed/power will be the same, however, if you change some other bits, and put on a turbo it will actually give you something out of it.
looks cool thou, and dont need to be changed, only washed.

it will probably give you heatsoke