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

Hey guys, working on a 1970 dart with previous work. The car was a 6 cyl. so somewhere along the line someone swapped in disc fronts. On my first drive putting this baby back together the upper ball joint pushed right through of the UCA. I suspect wrong ball joint or the guy before me stripped it out. I am now trying to find the correct upper arms and screw in ball joints. There are no stampings on the uppers, only the lowers # 82459
All of the parts appear to be Mopar stuff, Not aftermarket.

I welded the ball joints in just to get it back to my shop. No judgement please. lol..

Any ideas on what these arms/balljoints are actually off of? where to get them?

Sure appreciate the help fellas.