I added XFQ after delivery and it was easy to install but took half a day. The TTPMS is not yet out there for the early adopters, but there is still hope that it will be avalable. There was some talk that the XG9 will be released around 3/2/20. I would tell them to keep that truck and wait until both are orderable.I do have XFQ on my build sheet after all. Hope I can add XG9 after the fact some day. Otherwise I guess I buy an aftermarket trailer TPMS like many other RV'ers.