yo,
I've wondered about this a lot since a tower wouldn't pull me off a sand dune by the front end. And later, I asked my fav 4x4 store owner and he wouldn't rec. front tow hooks or winch/bumper for my 96; nor would he install it.
I just read Warn's notes:
"NOTE: Warn Industries designs and manufacturers several different mounting systems to accommodate our recreational vehicle winches. When properly mounted, these systems do not interfere with the factory air bag system. This opinion is based on analysis by our engineers and a limited number of crash tests. When installing a winch mount on a vehicle, the installer should take care to ensure that placement of the mount does not interfere with the factory air bag sensors. In addition, the vehicle sensors should not be moved or modified in any way. It is not practicable to test every possible vehicle and winch mount combination, and Warn has not attempted to do so. We recommend that the user check with the vehicle manufacturer and a reputable, qualified mechanic to determine whether a particular installation may interfere with the air bag system. The consumer should then make a personal decision as to the appropriateness of this accessory for the particular vehicle. Warn cannot and does not guarantee the proper operation of the vehicle's air bag system if the winch is mounted contrary to the vehicle manufacturer's recommendations."
So, what is Ford's recommendations? other than this in the Owner's Guide ..refers to front bumper......:
"Never use a tow bar that attaches to the
bumper when you tow your vehicle. This
could damage the bumper and cause an
accident."
and did Warn test late model Broncos/F series?
and look at what Autofab did!:
http://www.autofab.com/front.htm
Anyhow, I've asked a few folks who say they have used the winches and been towed out by the front (as well as those here) and they say they have not had any damage to the crush zone area (accordion section) or the SRS.