How do you know it has a shorter stroke? That P/N is what Mother Toyota says it's supposed to have. The EPC only lists 2 others, one for RHD ST182 and one for RHD ST185.
Well, for one the official Toyota press release claims it, for another, I have a rhd RC clutch master cyinder, and it has a shorter stroke than my reg ST185 one......................
Problem is, I can't use the cylinder, and I can't use the piston in my reg one.....