So when they are all at 50 ft/lbs, do you loosen each one individually and retorque to 50, and repeat 3 times, or do you loosen all bolts and then retorque in criss cross pattern, and then loosen all again and retorque in criss cross pattern?

Also is it safe to reuse ARP head studs. Im buying a gsr short block from my friend because its obd 1 and thats what I need and he says he'll give me his ARP head studs with it, they only have like 300 miles on them.

Thanx