Looking for a vendor for replacement leaf springs for my 41 Plymouth coupe. Looks like 40-48 are the same. Even some nice used would work.
I bought mine from Posies http://www.posiesrodsandcustoms.com/posies-catalog/ Page 44 if I remember correctly
ESPO Springs n Things is where I bought mine for my 48 Plymouth. They have them stock height and lower also.
POSIE has a very nice replacement rear spring for the Mopars.. I have a set under the rear of my '39 Plym conv cpe. I did not like the Mopar rear shackles so we made our own "C" shaped shackles out of flat plate steel.