I would like to know if it is physically possible to put the innards of a cdma (alltel branded) 650 into a gsm housing. Aside from the cellular radios, are there any other differences? I have looked online at photos of disassembled 650's, both cdma and gsm, and as far as I can tell, the only difference is the lack of sim card slot in the cdma (and the cellular radio). I will probably just buy a "verizon" branded dark grey as they are plentiful, but, if I can find a "black tie" housing, I would like to use that. I know that they are very rare, but, there might be one someday.