Well, if youwanr some messed up speaker not worth anything. Go ahead andstick some other driver in there.
No one will notice except you.
And then selling them will be a problem, as anyone 'knowing will not pay half what you want for them, and it you LIE about it??
So cough up the money.
It's like you owned a Corvette, and decided an old Chevy Citation engine would fit, and be cheaper...