none that we know of. :-\
Possibly on Ebay. See sellers by the name of JDL Treasures or Thefisher_man.
To be honest though, i am not even sure what is going on in your pics... what, is there a 1/4" hole through the drag lever? And a spring-loaded plunger resting upon the plastic screw to keep it in place?
What did the original part look like?