Are the upper control arms on a 70 B body date coded? And if not, what all years are the same?

Thanks!

Don't know about "date codes", never seen any, but 66-72 B body interchange along with the 70-74 E body uppers, they are the all same

Thanks ! that's what I needed know.

62-72 B body and 70-74 E body upper control arms are interchangeable

Are they all identical in looks? Or were there small changes over the years.

I haven't noticed any differences