Mule deer form question

I recently purchased a Lancaster 8100 semi sneak whitetail form from the buy 2 forms for $50 sale they have. My question is, can I get a mule deer change out head and put on that form? Will it be correct? I bought the form for a tanned whitetail cape I bought that was suppost to be 20 inch but is more like 18.5. I should have checked the cape first! Live and keep learning tho. Jason

 

Thanks for the reply. After posting I test fit the Mulie cape to the form and the briskit was off. It didn't appear to be wide enough or thick enough.