????
If they have never been used, what is wrong with installing them? Who says that they can only twist in one direction? What makes you think that the metal knows what direction they are supposed to resist twisting?
I have swapped bars side to side and have never had a problem. The 1.0 bars I had in the Charger were pulled and swapped into a 71 Road Runner 2 years ago and I didn't put them in that car the same way they came out of mine.

We are talking a huge torsion bar here...Not some slant six, no A/C .85 bars. A 1.16 is big.