One thing you will discover with the green bearings is that because the mounting flange doesnt float like the stockers it will be very difficult to get the flange to clear the metal strut that goes between the shoes at the top. The way to get them out then is just pull the backing plate off the studs with the axle so that you can get the flange to clear. No need to disconnect the brake line, as there is usually enough give in the hard brake line to do this without damaging anything. Just don't go nuts with it and you wont have any problem. Install the same way(with the backing plate off the studs).

MB