I may be wrong... but if I remember right it's 60-89- 90degrees. They are torque to yield bolts. IF they hit 120, you'd be very very lucky. I wouldn't try and retorque them, you may end up having a bad day. If you are concerned, I would save up a bit and get a set of 12mm studs from Haisleys, and a long bottoming tap and install studs. Then you can torque them to 120 and have no issues with a recheck. If you install the studs now, I would follow the torque pattern, remove 1, install and torque, remove 2, repeat... etc.
Josh