Bbp disc swap question

They have a 1974 dart sport at the pull apart yard but it is drum brakes and small bolt pattern. Would these be big ball joint control arms? I read that all after 1973 were.

Yes, those should be large ball joint UCA's.

Pull the spindles too, the large ball joint drum spindles are used for some aftermarket brake kits and are worth more than what they’ll likely charge you at that yard.