Rear leaf spring perch

Newbie, first post. I am looking for anyone who can direct me to a source for the hard rubber spring perches for the rear leaf spring. Apparently, they are supposed to be permanently affixed to the rear leaf spring, made of hard molded rubber and sit in the diff cradles with four bolts. Mine fell out on one side.
Does anyone know if there is an aftermarket part available? Possibly high durometer urethane?
I have only one pair holding the spring on the car, and need all new ones.

Thanks for any help,
GNVenom

try checking with Ecklers.

i believe that they are at www.Ecklers.com