identify these torsion bars please

A friend gave me 2 torsion bars. Not sure what they are for.
First one has:
891L 891L
345 and XNC

The 2nd one has:
888R 888R
210 and CRC

Can anyone tell me what these are for?
Thanks,
Frank

Looks like it could be /6 bars...you might want to measure

Mopar A-Body Torsion Bar Size and Part Number Reference Torsion Bar Diameter Spring Rate Mopar Performace # OEM # Application
.810″ 90#/in p5249148 drag bars
.830″ 100#/in (2535888-9) slant six bars
.850″ 110#/in (2535890-1) slant six w/ air–318 w/o air )
.870″ 120#/in p5249149 (2535892-3) 318 w/ air–340 std bars
.890″ 130#/in p5249150 (2535894-5) 383 std bars
.920″ 150#/in p5249151 h/d handling
.990″ 200#/in p5249152 solo/road race
1.040″ 250#/in p5249153 h/d solo road race-oval track
1.090″ 300″/in p5249154 oval track 1/4 mi–optional 1/2 mi
1.140″ 300#/in p5249155 oval track 1/4 and 1/2 mile