first off an intake is nothing more than a pipe with a filter on the end of it ... so dont pointlessly WASTE your money on an aem ... its a ripoff ... and dont use smog as an excuse either it dont take that long to put your stock airbox back on ... just get a generic off ebay youll be happy you saved the money.

If youre worried about storms or driving in an area where water might be a problem find a 2 piece cold air intake system that way you can convert it to short ram and not trip about rain gettin in it

As far as the exhaust is concerned someone else can field that question cause i dont have experience with either brand, but i have a freind with a magnaflow catback on a 95 accord lx and he likes it.