planning on picking up a 2000 turbo ls. Owner thinks it has a bent valve. Car has a rough idle and the motor shakes at idle. there is also a clicking noise when driving. Its running the greddy gsr kit TD05 intercooled without the gsr piggback of course. Its running off a safc at 6lbs. Im planning on getting the head resurfaced, replacing the valves, possibly upgrading springs and retainers, adding engine management, fuel pump, and HKS ignition system. I want to run low 13's at around 9lbs of bost. Any advice is greatly appreciated since I always had a gsr and know nothing about b18b or boost. thanks