On AF 772/77W, the PV cabin (and it is separated from both Y and J) consists of rows 22, 23 & 24. The Y+ configuration is 2-4-2, so you get rather more width than in Y (3-4-3) and the shell-seats are quite decent.

Be aware, though, if you like a window seat with a view: all three rows are directly over the wing.

-- Henry