go for a hks super drag way full exhust skylines love it, i put one on mine sounds beatiful n the car loves it power fc is a good computer i put one in mine advan fitted n installed it but i chose not to dis close pricing informations as mates rates came in to play far as boost controls go pay more get something better, bleed valves will be come annoyng if its under bonnet what you gonna do when u pull up next to some pesant **** in a commo or rexxie? jump out pop bonnet then go alrght **** lexrol its on ? loll acvr is a good option.. if u willin to pay that much i currently got 195 at the wheels through fton mount ecu ugrade boost n exhuast plus min mods like filter n lil shit... remove the cat see a better result