Not quite an exact answer to your question, but check this thread out:
DIY: Making cheap spare keys
So yes, just transferring the guts of the key works fine. All it takes to start the car is having the transponder near the transponder coil and a properly cut key.
Parts Car, car parts
Honda Del Sol(s)
"Hers"
My Original '99
The 78 F350
This
That
The S 2.5
Other
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