[s-cars] X-Plug question

[jpb3wvu at frontiernet.net]

My X-Plug is leaking and I just picked up the replacement plug and
O-ring from the dealer.  Any BTDT on the removal of old plug and
installation of new?    It looks as thought the top banjo bolt will
need to be removed to get the plug out.  What do you wrench the plug
with?  Large flat screwdriver?  i have searched the audiworld forum and
found that a "drag link" socket is mentioned.  WTH is it and does
anyone have a part # or description I can use at my FLAPS?  thanks.

john