Easier to tune 04's and 05's. With 06 and 07 years you will have to swap pcm's and their has been issues with gas gauges reading backwards and a lot of other funky things.
16' wrx sti- stock
06 Spice Red GTO- m6/exhaust/tune/suspension/377whp-383tq-sold
99 silvermist gp gt-g5/xp/IC/3.0mps-parted&sold