Another Torsion Bar question:

The bars are numbered on the ends, look at 'em, it's that simple. 892R & 893L and you've got .870 units, 890R & 891L and they're .850 jobs. Rust and miles driven would be
more of a deciding factor than years condition-wise. I'm with abodyjoe, unless you're tite on cash, new .920 units are great all around street use.....and new. As Jim Lusk said,
you will gain a lot of cornering manners from a frt. stab. bar, and quality shocks are a must!