Miststlkr, are you asking if you can cut off the window frame and make your doors frameless? If you are, yes it can be done, there has been many cars done like this before. Cutting off the window frame will not only require metal work but you will also need to get new glass cut(or glass from a simular model without the frame) (Exmp. '64 biscayne - '64 Impala) You would also have to fabricate a place for the window to seal to when closed and also some added support for the now frameless window to prevent torquing and sagging. So to answer your question yes it can be done, but there is much involved. If you intent on doing this let me know, be happy to help.
HK