Planning to do a SG Galvatron kitbash

Hi, this is the first time I'll do a kitbash (just a repaint).
What do I need to convert Universe Blades into Galvatron?, I'm not really sure if this will work because SG Galvatron was made using Universe Springer.
I hope he doesn't end up being sold at BotCon because is really hard for me to go, and instead becomes a members exclusive like Timelines Astrotrain or Airazor.
What do I need to convert Universe Blades into Galvatron?, I'm not really sure if this will work because SG Galvatron was made using Universe Springer.
I hope he doesn't end up being sold at BotCon because is really hard for me to go, and instead becomes a members exclusive like Timelines Astrotrain or Airazor.