That indicates a 1996 build LTS, but.. still can be a 97 model.
But the shock is not the trunion mount shock. You can measure the eye-eye distance and can mount other shocks, like a fox which was also available for the LTS.
The straight link shocks are trunion mount. So the choice of shox on my bike a quite limited. Risse, RS and some rare other models. I choose to use the original one again (only by accident a bit longer) becasue it was cheap, 15 dollar. But I want to use it with a different (titanium) spring.