Thank you for the reply, but I am looking for a rear shock

The shocks I found are new, but they are old models from 2001 or 2002 (SID XC) and 2003 (U-Turn).

Eye-to-eye length matches for both, I am just wondering which shock would be a better option. I figured, since buying unused costs the same as servicing the one I have, I might as well go and replace it.