I've got a 04 A4 GTO that I'm trying to save and get her back on the road, the LS1 is too far gone to save and has 250,xxx miles and was abused. I want to make it a fun car to take out and have fun with (hopefully around 550-600whp eventually). I've already acquired/ bought a ARP 1/2 inch Gen III stud kit, MSD coil packs for an LS1 style head, BTR LS1 Stage 2 Truck Cam Kit ( Cam, rods, and seals), Transmission Specialties 2400-2700 stall converter, and a 4L60E PerformaBuilt transmission rated to take the HP I want. The car had 706 heads on it w/ the LS1 so it want to reuse them. Should I get new rockers, rollers, flex plate, etc... I'm younger and just unknowing. Also what are your engine recommendations for the GTO with the high compression heads in 6.0 or a stroked 6.0 that won't kill the build and stand up too a blower in the future. I would like to not touch the fuel system yet too. Thanks in advance for the advice and help.