I'm not really sure I understand what you're asking. Put the rocker on the stud, find zero lash, tighten the rocker nut 1/2 to 3/4 turn and tighten the lock. You want the flat part of the trunion pointing upward.
Yes there are guide plates on the heads, also I am using hydraulic lifters I thought that with screw in studs you had to set the rocker height and that was based off of you cam lift?