I remember when I did them on a 6.doh, what a pain in the butt good thing your engine is on the stand. I think the final torque spec for the ARP bolts was something like 215 ft/lbs on the 6.0 I don't know what it asks for a 7.3.

 

It is a piece of cake... 125lbs is not going to twist anything. During my recent engine rebuild i torqued the head down on my own with the bolts pointing up.

Use your body against the engine to hold it from twisting....

Easy Peasy......... !!!

 

I like to set such things up so my body weight does the work if I can, it doesn't take much to make my back ache any more.