Oh sweet, vortex's are cool in a weird way.
I'd personally plan the build from start to finish and prep the car to suit.
i.e. upside down fmic with reversed manifold and correct dia piping to ensure lag is a minimum. Upgraded turbo (VF34 for earlier spool or bigger like a TD05-20G). Definately budget in an
ECU i.e. PowerFC, Vipec, Autronic or Motec. Full 3" exhaust.
Wham bam thank you ma'am, you have a weapon.