Here are the stock rates:

996.1 GT3
PART NUMBER: 996 343 531 91 FRONT
PART NUMBER: 996 333 531 91 REAR

35 N/mm -- 200 lb/in
65 N/mm -- 371 lb/in
D = 171 lb/in



996.2 GT3
PART NUMBER: 996 343 531 95
PART NUMBER: 996 333 531 95

40 N/mm -- 228 lb/in
95 N/mm -- 543 lb/in
D = 315 lb/in



996.2 GT3 RS
PART NUMBER: 996 343 531 97
PART NUMBER: 996 333 531 95

45 N/mm -- 256 lb/in
95 N/mm -- 543 lb/in
D = 287



997.1 GT3
PART NUMBER: 996 343 531 95
PART NUMBER: 997 333 531 93

_40 N/mm -- 228 lb/in
105 N/mm -- 600 lb/in
D = 372



997.2 GT3
PART NUMBER: 997 343 531 94
PART NUMBER: 997 333 531 95

_49 N/mm -- 298 lb/in
115 N/mm -- 657 lb/in
D = 359