Hi Kevin,I fitted a jza70 clutch pedal to my mx83 but it was a pain.If you go to the trouble of making a paper template of the size and angle of the mounting area and shape from the interior with a reference to horizontal you will note that a jza70 clutch set up wont mount vertical,it leans toward the brake booster.
Armed with this template you could go shopping at a toyota wreckers.I noted a stoty of one done with a hilux or hiace part.FWIW. Good luck mate,Pete.