I’ve got a knackered M986 rear mech that needs the bracket axle unit and cage replacing. Parts add up to nearly a new mech so… was wondering if I buy an XT M786 mech if I could use the parts from that (sacrificing the carbon cage – not bothered about that)?

This document seems to imply it will work: http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/RD/EV-RD-M786-3321_v1_m56577569830801190.pdf

Anyone been there or know for sure?