No experience with Syncros, but my Eagle Talon full-time
all-wheel-drive has only ever been towed with all 4 off the ground.

With AAA you can request the flatbed, as others have suggested.  You
can also get them to move the sucker with towing dollies under the
wheels that would normally be on the ground.  Towing dollies are
contraptions that slip under the wheels and have 2 wheels each.  You
can often seen them strapped to the back of tow trucks.  I had my
Talon towed with dollies; no problems.

BTW, the Talon has 95K on it, so no smart remarks about why it
needed to be towed more than once.  :-P  I blew an oil pump once
after having the car in Lake Placid during a -40 weather (where the
C and F scales meet) with 10W30 in the case.  I didn't know any
better in those days.

-Karl

Karl F. Bloss - blosskf@ttown.apci.com or bloss@enter.net
Trexlertown, PA
'87 Vanagon GL Weekender "Beverley"
http://www.enter.net/~bloss/vw/