Yeah, I know now not to twist

Oh well, live and learn.
I have tried to find the parts on-line, but for some reason I don't see listings rings on a 2003 3L. All I can find are whole Piston w/Ring assembly

Any ideas?
Would it be a bad idea to purchase Stilov's used 2003 Taurus pistons? They have ~2000k miles on them, as a 2nd option.
Thanks for your help!