SuperOldSchool asked for more details on the writepin removal tool so I'm posting it here in case someone els is interested as well.
You just put the pvc pipe against the piston on either side of the wrist pin and turn the nut on the right to draw the pin out if the piston. The cuts on the pipe are to clear the edge of the piston.
My friend Moe supplied the threaded rod (formerly used for spinning the oil pump on 'merican V8 motors after a rebuild).