upper control arms

well let me figure out my upper control arms first, are there marking on them to perhaps tell me year or make. there not A body because there big ball joint. there is a number. it says 3-305, they didn't spring or anything when I removed them from the car. normal fit.
No. E nor B body upper control arms will not fit your A body cuda. Neither will C etc. c

You need A body uppers, if you took uppers off your cuda that are big ball joint, then at some point in it’s life, someone converted it to the big ball joint spindles. And thus the big ball joint uppers