If you don't want to spend a great deal and want to get your beast purring, i highly recommend the CorkSport Gear From mpsgarage.com.au
The CorkSport Downpipe , CorkSport Cat Back and CorkSport Short Ram Intake are top value for money. You don't need to be an expert to put the bits on either.
You could also change up the CorkSport SRI for a CPE Cold Air Intake.
If you want to spend serious a bit more coin, go with the CPE Gear. Quality Engineering!
CorkSport FMIC with Cold Air Induction, , Cork Sport Cat Back, CPE Standback with PNP, TurboSmart BOV, Custom Highflow Cat with CorkSports Downpipe,Pauter Rods, CP Pistons,ARP Head Studs, BIGGER TURBO COMING, Pre-ordered a Stage 3 CPE Engine.