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has any one used the 1134 sd4 gasket with high boost and are they any better than comitic. have used the standered 1134 mls and seem to always get a little combustion leak on the two center holes everything flat and proper rm finnish .running afr head with new dart blockand new studs. torque as per arp 105 with old block and 125 with new block still leaks with 25psi and no detenation.is there a better grade head stud than the arp that is listed
 
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