This is a helpful thread!
I've just recently acquired a WMP 16x16 Slingerland floor tom vintage late 60's that has all of its hardware except the tom leg mounts/legs. So, at the moment, it truly is a "floor" tom.
I think this drum would likely have had the push button brackets with the mounting holes being 2 and 1/4" center-to-center.
Is there a source for more modern, new replacement brackets that would fit? The ones I've found so far seem to be smaller center-to-center. I'm wanting to avoid enlarging or drilling new holes. I basically just want the brackets and legs, and whether or not they're Slingerland doesn't matter. Thanks.