[Fot] toyota calipers for TR's

[Enquiries Road & Track]

folks, i'm aware Toyota 4WD front brake calipers can be easily fitted to
TR's. . All the write-ups only discuss calipers suited for solid discs.
I have got one from a early 90's Toyota that had vented rotors, but it has
two big pistons and wont suit the TR master cyl.
Has anyone found a model that has the 2 different size pistons, and uses a
vented rotor??

thanks, Terry O'Beirne
Australia