excellent how too, and its not too bad a job, BUT .. if the inner pivot bolt is rusty and jams in the captive nut , and the nut turns it then usually becomes a whole rear subframe out jobbie..
Sounds bad but again isn't that hard ( expecially when you have no alternative)
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Worst bit really then is the exhaust has to come out of the way.
Bin the dunnit .. etc
C