It took about a month for all the necessary parts to get in, but I finally got my rear-facing seats installed today on the CPO that I took delivery of in late January. They're awesome and I know the kids will love them and we'll get good usage out of them since they're still young. A few details for others that might be interested. From what I understand, the request must be escalated to some high level service exec and approvals are done on a case-by-case basis, although my SC got approval pretty quickly. I was initially quoted ~$3400+tax. It ended up being a lot less, more like $3150 including tax and labor and everything, so I was pleasantly surprised. They mentioned that my car (VIN 37xxx) did not need the crossmember to be installed, since it already had it. This contributed to the cost savings compared to the initial quote. I expected them to spend all day on it, but it only took them a couple of hours. Overall, other than waiting on parts to get delivered, it was very fast and painless, and the cost was extremely reasonable for a retrofit considering they're $3k when factory installed anyway.