It's rare that I get my hands on something before the majority of /toy/, so I feel like I should help out when I do.
For everyone wondering the same thing as the anon in the last thread
>>8888832>I want to see if a Marvel Legends head looks okay placed on the Sister's body. >I know exactly the one and only headsculpt that will look great on her.I assume you meant the black bobbed head from the stepford cuckoos set, but I don't have that figure, so here's a comparison with every female marvel legends head I have on hand instead.
As you can see with this collage, they fit ok-ish. They look a little pin-headed from some angles, which isn't great but might be the effect you're going for to sell the super bulky armour. Even then, compare how undersized Wasp's helmet looks next to the actual sister helmet.
The main factor to consider is the back of the head's hair. As with Nebula and mohawk Carol, a bald character reveals a big gap in the neck joint, but if the molded hair is too long, then it sits a bit funny and the head is either permanently looking down, or the neck is too long, like Black Widow here.