are all b body rear spring shackles the same

[Texas charger 73]

i have a 73 charger. i need factory rear spring shackles... will all b body shackles fit.. will shackles from a 69 rr fit?

 

[Nacho-RT74]

when I got my car it had those generic long ones with several holes, 'cause the springs were worn. Got new springs and went to junkyard simply searching any original Mopar shackle available. I think the ones I got came out from a 78/79 Lebaron. They fitted perfectly