A bit more progress!
I have made my rear caliper brackets to adapt the RX7 calipers to fit the Toyota Hilux diff housing.
First I created a CAD model of the diffhousing, axles, bearing and housing, disk rotor and a rough model of the RX7 caliper.
Then I printed a 1 to 1 drawing of the profile an cut it out of MDF.
Then ground out the step down.
When I was happy with the fit I created a DXF file and had them laser cut and had a mate mill the step into them.
And here is one fitted!
I also bought some new rubbers that go top and bottom of the leaf springs. Bought almost the last lot that Mazda had left.