NOS Mopar 35147070 float for Holley 2BBL carb. I found it listed to fit:
70 Plymouth (Fury etc.) Dodge (Polara, Monaco etc.) Chrysler (New Yorker etc.) 383 With ECS or With 4 speed
70 All models (B E and C bodies) 383 Auto Without ECS or Without Air conditioning.
It may fit other Holley 2BBL applications, but not that I found (but I did not go through all the supersessions). There are people that have some listed that say 60 to 79, but I cannot confirm that.