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Requirement to replace cylinder/head studs


Model: 911 C4, Year:1990, Mileage:74,000, Type of use:Street use only
I am in the middle of a reseal job on my 1990 C4 engine. I have had the heads redone and mating surface to cylinders are machined. I was informed that there is a service bulletin regarding replacement of the original cylinder/head studs with an upgraded stud from Porsche. The current and original studs appear to be in great condition. The car has approx. 74,000 miles and is used for summer drives only. Should I go through with replacing original studs? There was some slight evidence of leakage at head/cylinder mating surface prior to getting heads machined.

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