Parts for KX170B

Does anybody know a good place to locate parts for a KX170B?
Specifically, I need to replace at least three of the four switches
(com on/test and nav voice/ident). As I understand it, the newer radios
had a revised switch. I am fairly sure I have the older style radio,
but would use the new switches if they would work.

A local shop has some they could pull from parts radios, but they won't
sell them without doing the installation as well. I have no problem
paying to have the radio checked/adjusted, but I am admittedly too
cheap to pay to have the switches soldered in if I can help it.

TIA from a guy on a budget,
Matt