So I was looking at some rear derailleur's and noticed that the newer LX looks like my old XT M761. I pulled up the specs and most of the parts are interchangeable.

<b>XT M761</b>
http://techdocs.shimano.com/media/te...9830609154.pdf

<b>LX M581</b>
http://techdocs.shimano.com/media/te...9830609149.pdf

I'm curious if they would work and feel similar?