2005-2010 v6's aren't worth it to me. I would just go for looks. A tuner would be the best bet for under $500 if your going for performance.
-SOLDfirstname.lastname@example.org RaceRed 2013 v6 Mustang, 3.73 gears, MPT 91Race Tune, Axle-Back Straight Pipe, Tower Brace, BMR LCA's, BBK Shorty Headers, BMR Relocation Brackets, Lethal Performance X-Pipe Catless.
-2008 Civic SI...