if you are trying not to be seen . then don't get those cheesy riced out glue on aluminum wings....Cheesy rice. mmmmhungry.
get some painted sideskirts...a mello muffler like the Cobb single tip and a HKS bov...its not stock but it doesnt sound like a lawnmower engine turned into a go kart. Just enough performance to enjoy the ride and blow away the civic in the lane next to you.
Go Wagon.....go stealth