The other thing Anfo is that the Versailles diff will have large centres on the hubs, like falcons do from late XB, this maybe an issue with your wheels as well depending on the size of the centre hole. In the next couple of months I will be getting a car from Coffs Harbour to restore, the owner will be bringing it up on a trailer, maybe an opportunity to get the 9" closer to you, John has a 351 here as well he will be taking back with him which is for-sale, sure he would take the diff as far as Coffs. Remember to as Glen said it's a bit wider, but it won't be an 1" each side it will be 1/2" each side.