The torque specs aren’t as important as knowing when to re-torque it after a ride.
gaskets crush and studs stretch a little. Eventually it all settles. Ride, let it cool, use a little pressure to snug the head back down. After a few rides,you’ll go to snug those head nuts down and it will still be tight.
Knowing that part is more important than the initial torque.
Same for intake and exhaust.