Has anyone been able to order the Off-Road Group package? It's listed on the public build site, but dealers say it's not available in their order system. It doesn't seem like this would be a supply chain, parts issue since, other than maybe the Electronic Limited-Slip Differential Rear Axle, this options consists mainly of skid plates and tires. Is there a known reason why it isn't currently available, and an estimate for when it might be?