Technically............. The only model RB20 fitted with the same PTU as the Z32 is the C34 Laurel, fitted with the RB20DE engine built from 01/1993 to 09/1994. The R33 Skyline's fitted with the RB25DET engine built from 08/1993 to 06/1994, also the RB25DE engine built from 08/1993 to 07/1997 share the same PTU as the Z32.
Trivia.... The so called "Series II PTU" first appeared in the Z32 from September 1993. It wasn't a new development as the "Series II PTU" first appeared in the Y32 Cedric/Gloria from June 1991.