Cup1's to 93 Cup2's 94- my
All Coupes and Cabs had 16" Cup 1's as std.
pre '94 Coupe's could have 17" Cup 1's as an option, and would have if upgraded to sports suspension (M030).
17" Cup 1's on pre-94 CS's
Post 93/94my Sport and CS's all had Cup 2's.
Courtesy of Andy S and WGG on the 968uk forum.