Good God Man!
Are you CRAZY asking for mods here??
I'm surprised the Mod Cops haven't flamed you to death already regarding the evils and the moral and ethical issues surrounding a radio mod, even if it is for a legitimate reason.
(Now climbing down from my soapbox)
Seriously, though, go to www.mods.dk
They have the info you need for your mod as well as some other technical tidbits on your radio.
Best wishes and thanks for wanting to contribute to the MARS program.