Should be able to swap over the Eprom chip. See ' Swapping odometer readings'
http://www.fordmods.com/ford-technic...ter-upgrade-d4
There's a pic of the chip on an EF/EL falcon board here
http://www.fordmods.com/ford-technic...nstruments-d14
I've done a few - they are tiny, around 5mm, so they need magnification.
An electronics repair shop should be able to do it for you.