S12 is the number stamped on the hilux calipers

hilux and 60 series calipers are not the same thing, and $165 a caliper is one hell of a rip off. i sold a pair of rebuilt ones for less than that

the hilux calipers that have stagered pistons like 60 series calipers are to suit a 10mm solid disc not a vented one
later hilux's with equal pistons have calipers that suit 18mm vented discs like the 60 series calipers
they are definately not the same though