Does anyone have the official 7.3 ARP stud torque specs and sequence?

[crash-harris]

Check the final torque step on a 6.2 GM...... "Turn an additional 90°"

I know the Haynes diesel manual says to turn each head bolt on the 6.9/7.3 in reverse order of tightening when removing heads by 90* until the bolts are out.

 

[Macrobb]

To me the line sequence just insures you have double checked all the bolt torque values and not missed one in the first pattern.

Exactly this. I'd go up to 125 in 3 steps like the ARP instructions said, then do the other pattern with the same 125 as a double-check.
Better to check it twice than miss one.