Unlike Keith's Isuzu 2.6 engine, your GM/Saturn 2.2 does appear to use TTY bolts. It seems that is what the Saturn guys say about it.

I believe that a) your torque spec includes a torque value, followed by tightening to a specific angle (i.e. stages of 90*) and b) if you look at your head bolts, they have a tapered, or thinner shaft between the heads and the threads.

Hopefully Jerry will chime in with the final word.

Good luck,
Michael