The centers of the bearings is the correct pitch so yes this should fit the Wilson II. You will need bearing blocks which are cheap.
For the belt instead of using printed blocks to hold the GT2 belt I now use 2x M5 Bolts and 4 M5 nuts… drill 2 the holes 7mm off the center of the plate and 10 to 15mm apart. Cut the bolts so the head of the bolt is just below the line of the belt run from front to back ad lock them with the nuts.
Then just make 2 loops in the belt ends with zip ties fixing the loops and put over the head of the M5 bolts.
You will have to make sure the position of the bolts allow full movement of the Y axis without hitting either end,