Hi Paolo and welcome!
If you have a side dinette in your Exsis, you have the ‘SG’ version. The ‘SK’ is the version with seating either side of a central aisle.
I would have thought that this would be a straightforward improvement, but as I don’t have the dinette model Exsis, I can’t advise. Maybe one of our dinette-owning members could comment?
The crucial points I think that I would be closely examining would be…
1) The dimensions of the “up/down” mechanism.
2) The size of the table and its relationship to the seating.
3) The weight of the unit and the fixing to the wall.
All things are possible, Paolo, depending upon your competence as a DIYer or the depth of your wallet if you pay someone else to do the job!
Let us know if you carry out this mod as well as telling us how you went about it. It will be very interesting for others.
Good luck.
Barry