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I'm not quite sure I understand what you're asking. If it's whether you *should* do these things or not that depends on your circumstances. What mods do you have (What does beefed up mean?), what kind of driving do you do?
If you're just using the car for a daily driver and really haven't done much to add power and don't intend to, stock should be fine. If you have modded the car, or intend to, then the upgraded headgasket and bolts would provide you with a larger safety margin.
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"Our Lady of Blessed Acceleration, don't fail us now!" -Elwood Blues
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