Genuine 1993 300ZX Owners Manual - This is a U.S. Edition & is in brand new condition. Printed: September 1992. - $65.00 Genuine 1995 300ZX Owners Manual - This is a U.S. Edition & is in used condition (a few of the pages are slightly marked on the top right corners). Printed: August 1994. - $45.00
Do either of those cover the convertible and its differences given the verts were available in the US during those model years?
I didn't read them in detail, however both owners manuals are applicable to the convertible, as it details how to lower & raise the roof.