Rick Jay wrote:
Our RV must fit in a 27 ft long space.
I just checked the specs and the length of the 26Y is shows as exactly 27', so hopefully it'll fit into your space.
As to finding the twin bed model, the RV you're looking at is 15-20 years old. At this point, you could fairly inexpensively remodel the bedroom area to put in the overhead cabinets you wish to have along with replacing the queen bed with two twins.
I know it's easier if you could find exactly what you're looking for, but if you can't, it shouldn't be too hard to change the floorplan to fit your needs. Check out Home Depot and Lowe's for free-standing overhead cabinets.