I think he mis-typed and meant 1997.
This is copied from an old post on Pelican (993 variants at bottom of list):
kg lbs-- models-- Source
182 400 2.4L E, S, RS 1972-73 Tech. Spec. book
183 403 2.4L T 1972-73 Tech. Spec. book
200 440 2.7L 1975-1977 Aichle - 911 Engines
190 419 78-83 930/09,19,10 78-81 78-81 & 82-83 Tech Spec. book
200 441 78-83 930/03-08,13-17 78-81 & 82-83 Tech Spec. book
190 462 3.0L 1980-82 Aichle - 911 Engines
219 483 84-87 930/20,26 84-87 Tech Spec. book
220 485 84-87 930/21,25 84-87 Tech Spec. book
219 482 3.2L 1987 - 1988 Aichle - 911 Engines
238 524 964 89-94 M64/01,02 ROW &US 964 Tech Spec. book
226 497 M64/03 RS 964 Tech Spec. book
275 605 M30/69 3.3L 964 Tech Spec. book
276 608 M64/50 3.6L 964 Tech Spec. book
232 510 M64/05-08 993 Tech Spec. book
221 487 M64/20 993RS v-ram w/o ZMS 993 Tech Spec. book
230 507 M64/20 993RS v-ram w/ ZMS 993 Tech Spec. book