Good day guys, Thanks for the welcome ZapXR6T. The dealer fitted kit is not cheap: Stage 1- Chip Smart computer 270Kw $1650.00 Stage 2- Intercooler with plumbing Computer and sensor mods inc fuel regulator 3 inch stainless steel exhaust from turbo with cat Air box 300+Kw $8500.00 Not cheap, but if you spend 50K buying a car whats another 10K modifying it and you get to keep the warranty (written). Also the car comes with a compliance plate of sort noting the mods as factory options (no engineers, insurance or cops can hasle you, in theory) I ordered the car 3 months ago and have been looking at the options in that time, it will be getting the stage 2 fitted on Monday at New Oak Ford (FPV in Caulfield) and I will let you know how it goes. If you compare the price of a high performance exhaust for a GT at $4500 and the fact that I have seen numerous cars receive that mod then the turbo mod seems reasonable. The 300Kw is conservative, for obvious reasons but it can be packed to throw a punch. I contacted APS, Nizpro, AVO, ATS(P) all great packages and service I am sure but the dealer is probably the best bet until warranties expire, technically they designed the car so they should know about it. Im not planning to break land speed records just have a well balanced car. All my opinion, I could be wrong! Cheers