wrote in message
...
In article

If the seats are only along the carriage side walls it is not clear how
you can add seats. The 313s lost seats by a few 2+3 rows becoming 2+2.
Easy to do.

Agreed. I'd be assuming the proposed change is basically impossible,
because so much of the equipment they normally fit in the corners of the
carriages (like in 377s etc) must have been moved to new positions to make
room for the gangways, and the only obvious other place is along the sides
under the seats...

Paul S