An interesting question that will probably get yes and no answers!! I will start by saying that I have used the diff guard but have since jacked up either side near the hub. There is an adaptor that sits offset to allow a central jacking point available (or you can make it) that I will be getting.I know it says you can jack up on the diff case , but can you jack if you have diff guards fitted , or will it put to much strain on the bolts holding it on .