There is a discussion of the total production numbers of the different variants of 9000 series Panteras, as well as a great analysis by George Pence of the GT4, Gr3, GTS/4, GTS, GTS/4 variant evolutions, on the following thread:
https://pantera.infopop.cc/top...089#1598208419948089
By my count the maximum possible number of GT5-S Panteras that could have been produced is 183 as opposed to 197 for the GT5.