Hi, Owner of a currently stock 03 BA XR6 Turbo. I'm wanting to do a few mods to get a bit more power. Question 1. How much power is safe for the transmission, engine and driveline etc? The reason I ask, I have mate that got work done (Custom Tune, CAI, Exhaust, Valve Springs, Cooler, Fuel System) his car made 303rwkw at 12 psi. Since then he has done a gearbox and now has a crack in his turbo. Is this common with this much power? At this stage I'm thinking of going for around 270 - 280rwkw. Whats required to achieve this kind of power? I was thinking Intake, Intercooler, Exhaurst and a custom tune. Is the fuel system capable of this? My last question is, I'm in Dubbo NSW (5 hours from Sydney, 4.5 hours from Canberra). Who's the best tuner to take it to? CV Performance? Thanks in advance, Greenie.