I'm going to be doing the crown vic conversion shorty. The cement in the RV is finally ready for use. The thing about that swap is that you do need to cut the axle housing flanges a little but its completely harmless and you can revert to the drum setup without a problem. You also need a proper hub spacer and I think a rotor spacer or bearing spacer, I can't remember. In a month or so when I get started on this conversion I'm going to be doing a write up on it. I know I've been saying that forever but life has been hectic. I mean it this time, its comming soon !