I don't think that you can get a socket on either the bolt head or the nut, and they're too tight for an open-ender.
The tailshaft - my wife had driven the '99 all week and had apparently told me of a noise. I drove it about 40ks, stopping several times to investigate a worsening vibration. Last time I took-off the shaft dropped onto the road at about 10kph, so no damage done but stranded. I found the source of the vibration! Couldn't drive it due to the bits still attached. Vehicle had done 50k but travelled muddy or dusty roads daily.