My Champion has 4 lug front hubs that I'm trying to convert to 5 lug front hubs. Is there a 5 lug front hub that will interchange? Can I use the existing knuckle/spindle or will that have to be switched? Are there any other parts that will have to be changed? I understand that the brakes and wheels will have to be changed to 5 lug. Thanks. Mine is the 9G Deluxe model.