Here is PlayfulGod's Post on xda:
[CWM] LG Marquee - ALPHA!!!!! [WIP]
ok need a brave soul to test this n report back.
And remember I am not responsible for what you do to your phone.
I dont know what, if any means of fixing a brick if it should happen, so use at own risk!!
Anyone attempt this with a BackUp and Restore?
And if so, with the Boost Mobile Model?