Age doesn't matter. It's experience that counts. If you really want to know just look in my profile.
They are "harder" because when the studs are installed in the block and the block is installed in the car, the head will not clear the firewall. And vice versa, if you wanted to take the head off with ARP studs installed with the block in the car you won't be able to. You would have to pull the motor to take the head off if you use ARP studs. You can try to install the studs after you fit the head on the dowel pins on the block. ARP studs might or might not have a small allen hole in the top of the stud to allow you to install the stud with the head in place. Some do, like my friends EVO. He installed ARP head studs and they had an allen wrench hole.
I hope you understand what I'm trying to say.
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