340 head torque requirements

My PRW rockers came with the whole set up for my 418 engine. Got it through Mike at B3 Racing. Your set up sounds similar except you have bolts instead of studs for the rocker arm shafts? I did not clean those shafts, have had them apart and the shafts still look good. Probably got lucky.
Will find plugs for the 318 stock shafts before cleaning!