Help ID this Napa Echlin...thing.
Your regulator "depends"
There ARE some aftermarket ones and that thing "could" be a regulator.
Some of the Powermaster ones use a alternator rear mounted solid state regulator that is nothing like original
If you have the original '68 setup it might look like this: (or same except very short in height if solid state replacement)
or this
or if you or someone has converted to the 70/ later system, would look like this: