Oh my gosh...I can't believe you guys are serious..... 
You have to understand what cosmoline dip was used for. Companies that manufactured parts for Chrysler would dip bare metal parts in cosmoline to protect them from rust for the short time period between the manufactured time and the time the car was assembled.
These particular parts were hooked on the ball joint end and dipped into cosmoline up to the area where the strut rod is anchored. Chrysler did NOT want cosmoline to interfere with the installation of the ball joint or strut rod.
The NOS pictures posted above clearly show the dip line. The cosmoline protected the entire control arm from rust up until the dip line and you can see surface rust starting where the ball joint and strut rod attach.
The ones pictured from this yellow AAR are a joke much like the idiots on TV. To use the excuse that "that was the way they were found on this particular car" is even a bigger joke....It's their BS excuse to cover the fact they have no clue as to what correct details look like. 
Just noticed the picture of the control arm on your post. Not sure who's that is and I don't want to be overly critical but one would think if you're going to go through all the trouble of making a part appear correct with the factory dip then you'd think they'd use a part that was in a
little better condition to start with. That arm is so rust pitted that it makes the use of cosmoline just seem ridiculous.
Those lower control arms were a dime-a-dozen. They were used on a LOT more cars than just E-bodies. Surely they could have found ones in better shape than that to restore. I know I'd be livid if they put something like that on a restoration that I was spending 5-6 figures on. Just sayin...
