Help! I need to identify my upper control arms please! 70 dart.

let's see a pic of the brakes & rotor... that *should* tell us right quick.
(i suspect i know what they are, but don't want to assume)

in the mean time, measure the upper ball joint:

the square top- land-to-land

1-59/64" is the big joint

1.809" is the small joint