True. They may even fit with the bugeye tophats depending on if they're made to use the spring seat area of the tophat or not.
This is a good thread for reference. If it's not already answered there, you may want to post the question there.
http://forums.nasioc.com/forums/show....php?t=1170952
Sidenote, Nabisco won't let me search that thread for "wagon" because it's too common of a term.