I use ARP studs on my Nissan L28ET. They are rated for a higher torque than the stock bolts, and with the ARP lubricant you can be absolutely sure of the torque. Bolts are harder to torque consistently because you are twisting as well as tightening, and that adds an error in the torque indication. ARPs typically are not lock-tited, just threaded in hand-tight where they bottom out.
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