Save your money and go to Sears and buy a 1/2" breaker bar and a six-point
socket (19 mm?).  Throw it under the back seat.  The stock ones are useless
on rusty nuts or bolts.   19 mm is almost exactly 3/4".  You might be able
to find a big old Cadillac lug wrench that would work.  A metric
cross-wrench would not free the lugs on my Westy.  I don't think the tires
were ever rotated (except going down the road!).  The Craftsman breaker bar
worked like a charm.

                                              Jay