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The main bolts are re-usable, they're not torque to yield fasteners. The ARP studs have issues on the RWD blocks because ARP designed them for use on the US version of the SR20 which is FWD with a different upper oil pan. If you want a performance fastener made with ARP material we have studs that fully bottom out into the block and clear the RWD oil pan which are good for over 500hp.
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