Mark from Wisconsin here, my 57 170 had the original rubber and fabric (?) pads as well on the mounts, all were toast, flat and misformed. As was the frame on the passenger side of the truck, it was split clean through where they all do if no springs were installed. This truck had a camper in the bed for 90% of its life, imagine the weight it carried around. The former (and first) owner, a school teacher out of Colorado, drove this truck as far north as Alaska and as far south as Panama, camping out along the way. This truck was rid hard and rolled up damp as they say... There wasn't one single piece of front suspension or steering that was not worn out or bent or scored out due to lack of grease and wear. My early 57 had very unusual hand made looking front shock mounts as well, not the cast variety that came later. Same with the light in the cab and a a variety of other Odd ball anomalies. Interesting to see what Willys had laying around the factory at the time!
I replaced the front mounting pads with Prothane medium density pads and have four springs ready to install in their rightful place!
Mark from Wisconsin
: When did they start using the springs? I have
: an early '57 150 and all 4 mounts were bolts
: with rubber pucks.