The Reese Goose Box or the Gen-Y version is the only two I would recommend. Both are cushioned and should give you a better ride, at least our Goose Box did for us. There was a tag on our frame box that gave some numbers. I think I called Lippert and they verified the model number. Jayco might also have the info, not sure though.
2020 F350 Platinum, srw, lbcc, 4X4, 6.7 diesel, 12,400 GVWR
2020 Pinnacle 32RLTS, Reese Goose Box