if u want to improve hp, don't bother w/ exhaust right now...maybe when/if u turbo...get minimal gains off exhaust when combined w/ i/h...6th gens have a nice growl w/ an aem cai...if u get intake i'd suggest getting cai over sr...IMO sr is worthless...susp is a must...makes a car so much more fun to drive...i got generic ebay f/r strut bars and they work well for me...but drop and sway bars will do more...hf, and welcome to HAN...oh...btw...u can learn a ton from searching