I wouldn't recommend it. There are subtle hardware changes from carrier to carrier, and you might brick your phone. For example, the Optimus S and the Optimus V are almost the same phone, but some of the buttons are mapped differently. A rom for the S would brick a V, and vice versa. Your best bet is to use one of Simon's Roms.
He does have an alpha of CM7, if that's what you're after.