To use a wico with the same layout you cut the hole for the button, and then install the Wico stick with 3 screws holding it.
Then you take a 1 1/8" holesaw and go right through the hole again , which chops off the corner of the Wico base.
Then install the button, the nut for the 3rd button holds the 4th corner down.
Don't worry aboot chopping the base, the plastic bases themselves are a dime a dozen, it is the grommets, nice handles and proper leaf switches that are hard to come by.