My 97 mustang GT has SLP Loudmouth Exhaust and my 99 Civic SI has Apexi Dunk exhaust so i like loud exhausts for one, but My 2004 Navigator I want just a slight rumble... Im buying 22 inch wheels for it so money is a little tight. I saw there is a CGS Exhaust for it on ebay for like 300 bucks. Another thing is it has to have side exit. i dont like it straight out the back it is the main reason i am switching. Anyone have an expedition or Navi and any recomendations???