How big a torsion bar nick is ok?

I'd like to say it's junk,but
personal experience says I'd be willing to try it, cuz
Firstly, I would put it into my DD, and secondly, I have already put a dressed one like that into my DD, and thirdly, I have seen what happens when one breaks at around-town speed, in my brothers Dart. It wasn't life threatening, and he drove it home. Then he drove it 65 miles to my house, where I replaced it with another used one; what a ride that mustabin,lol.
My Barracuda is no stranger to cornering on the bumpstops, no big deal.
I wouldn't buy one like that tho,lol.