which Bplus has rear bed/dinette for tall person

Thank you all for your input. Particularly names of rigs to look for. Also, Rolin, was there an issue with the seat belt not fitting the passenger due to the top strap anchor being too far forward when the seat is farther back? Your 2inch square pipe solution has me wondering if a Ford platform could work for my wife's seating issues. Do you have any other tips or observations to share?