Crestview RV in Selma, TX, also the one in Buda, TX ( which is the nations largest Jayco dealer) offer the GooseBox as an option installed for about $1400.. Changing the pin box to a GooseBox is no different than changing the pin box to a better 5th wheel pin box than the factory pin box. Jayco goes back to axle manufacturers when there is a problem with an axle, they go back to Lippert or Schwintek when there is a problem with their slide system, so the person you talked to at Jayco obviously is misinformed about the GooseBox, it is not an adapter, it is stronger built than the Morryde pin box that came on my Pinnacle, it rides so much better with the proper air pressure than any 5th wheel hitch that I have had experience with, and I have a full long bed truck to use as well. People at dealerships that have been properly trained, know that it is a better system. Little more difficult to hookup, but well worth it as well as it tows.
2012 36REQS Pinnacle w/ Reese GooseBox
Stays at Lakehills, TX on Medina Lake most of the year!!
Chevy Silverado 3500 Duramax Dually