Use these aluminum base plates to mount ITG foam filters directly to your carb setup.
Blank: This plate doesn't have any holes or cutouts for moubting a carburetor. It is entirely up to you to drill and cut it the way you want so it fits your particular application.
DFV: This plate has mounting holes and cutouts to fit onto a Weber 32/36 DFV or DFEV carburetor "longways". It will also fit Holley 5200 and similar carburetors.
DFV, Perpendicular: This plate also has mounting holes and cutouts for Weber DFV carburetors, except this one is rotated 90 degrees and offest towards one side of the filter so that a crankcase breather tube may be added more easily.