I recently exchanged my engine and have some certified spare parts left over for O540-A1D5, narrow deck.
Crank Shaft, Rods are M003, Mains are M006 overhauled by Aircraft Specialties Services in January 2015 includes 8130-3.
Cam Shaft overhauled by Aircraft Specialties Services in January 2015 includes 8130-3.
Case Halves overhauled by DIVCO in January 2015 includes 8130-3.
Misc gears, cylinders, pistons, intake tubes, etc are available too.
I can be contacted at dana.corson@charter.net