the head shouldn't probably be redone, i just did a motor rebuilt on mine in july and bought a mls headgasket as well and it works just fine, but some ARP Head Studs will be a good combo with the gasket.
If the car has higher miles and the head hasnt been checked for flattness you might as well have it checked since it is off. It is cheap, and acutally with a straight edge and feeler gauge set you can check it yourself.
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