Yes, studs differ from the bolts.
Studs, since they are screwed into the block, will not be removed again and will greatly reduce any chance of stripping the block threads.
They have a more accurate and consistent torque loading, due to the fact the bolts are being twisted during the torque and are reacting to two different forces simultaneously.
They align gasket & head to block during assembly.
Studs will handle most any performance upgrade you may due in the future.
And if you blow up you engine, they can be used as swizzle sticks afterwards.
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