I am also building the aluminum version. I have the ramps 1.4 board with lcd display. I am curious if I could install the um2+ firmware on a tweak of it. It would be nice to have the same display and settings as the original.
I am still awaiting my parts to arrive so I can not test the above. I would like after the build is going to upgrade to a oled display as is done here.
http://forums.reprap.org/read.php?13,499572,page=4
Thanks!