hi everyone, I recently purchased my first stang, 01 gt, 5spd. leather mach460, power everything, my mod list are off road x pipe, mil's, flowmaster 40's,k&n, mach chin spoiler, future mods are a (1)sc, and (2)lowering springs, would like your opinions on both?whats the best ones? ps: its not a 4x4, Gene