sticker under the rear seat, or a lot easier fi the car was never repainted, the options code sticker in the trunk....key letters are:
WE4- GN
LM9- Turbo Hot Air
LC2- Turbo IC
WH1- 84-85 T-Type
WE2- 86-87Turbo T
G80- posi rear
I am pretty sure that is the ones and what they mean....Compare your sticker in the trunk with all the little letters and numbers and look for any of those
Hope that helps!
PLEASE anybody correct me if I am wrong!!!!!
John