The stew mac baseplates dont fit without major modifications. The distance of the height adjusment screws of a humbucker isn't compatible with the dogear. I read of a guy who flattend the side tabs and drilled new holes to get it straight.
But this is the vintage real deal:
http://i35.photobucket.com/albums/d196/SLawing/P1000896.jpg
No. The bars on the picture are homemade. I also dont see how the baseplate is attached to bars.
I can mount it doggy-style...