Noob question to ya. As far as I know (not seen the paper work) the previous owner told me that the HG had blown and they took it in for repair. That was in 03 so would the dealership have torqued it to 72ft/lbs and would it be safe to run higher boost? Thanks Bill.Stock motor is fine, stock headgasket is fine, stock bolts are fine too.
If the head is torqued to 72 ft/lbs or higher (not too much), and you are keeping an eye on air fuel ratios with premium fuel you'll be fine. If the engine has never suffered a BHG, and you start turning up the boost, then it may happen.