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I'm getting the Japanese version of Prime's Airachnid to replace the Hasbro one. But I also wanna buy the 1st Edition Prime Starscream (either the regular one or the Exclusive "Dark Energon" one) so I can take Airachnid's head and put it on Starscream's body.

Will it work? Do I need to do something to Airachnid's head (besides remove the helicopter seat in back of her head) in order to fit in both robot and plane mode?

Thanks in advance.