[Zero10]

If the gasket fails often, and you're only running stock boost levels, then I would have the head at least checked for flatness, also have the deck surface checked for flatness as well. If both check out, then you're probably running way lean.

The FSM's specify the maximum amount you can take off of the head, but I don't have them with me right now.

The widefire head gasket is a good idea if you plan to run the car in anything other than a stock configuration. It's just extra insurance. It saved my car when the stock head gasket most certainly would have failed several times.

If you're o-ringing, it's a good idea to go with the wide fire head gasket, since you're no longer running a stock configuration.