Yes 60 Ft. Lbs. final torque.

The reason the puny Ford Factory stretch head bolts survive is the low power output achieved using a CVH head. The relatively poor head flow limits power production to 80 or 90 hp per cylinder - at best with 2+ bar boost.
For the CVH factory bolts and head gaskets are very adequate.

Differing engine block and cylinder head materials do not matter. The rally Zetec engines
used cast iron blocks and aluminum cylinder heads. Guess what - they didn't use Ford stretch bolts. They used ARP studs.