I've done this mod with what I would call poor results...problem is the sofa sets on the raised floor... unless you use a recliner from a rv furniture store... it sits too high... so unless you are 7' tall your feet don't touch the ground.... what it did on my pace arrow was built my own sofa that doubled as a storage box...I was able to use the cushions off the OG sofa so everything matched...
IMHO.... the fold out sofa deal in the 29m is horrible at best..