[Elecraft] MARS on KX3

[Aaron K5ATG]

I'm looking into possibly getting involved in MARS. The guy that runs it
locally sent the following question about the KX3:
Can the Elecraft KX3 be opened to permit full operation from 1.8mHz to
29.9999 mHz and do they have installed TCXO (0.5%) frequency stability or
the ability to install the hardware. MARS requires frequency
accuracy/stability to be +/- 20Hz of center frequency on assigned channels
for transmit.
Is this possible with the KX3? If so how?
Aaron K5ATG