If you want to try to build cm6 for the ally and have some knowhow on how to mod your phone come visit us on irc. We ported cm6 to the HTC aria for at&t and might be able to give you a kickstart on a working mod. We are on channel liberatedAria on freenode.net. Could aways join a webchat freenode Web IRC (qwebirc)
Have a nice day.
Have a nice day.