I'm not sure what you mean by "none slip diff". If it doesn't slip it's not a differential! If you want a spool or a mini-spool to replace your diff, these are available from 4WD specialists. Note that spools solidly lock the axles together, which makes the car difficult to drive on the street and also accelerates tyre wear.
The front diff in late-model Hilux 4WD's (aka Tacoma? Tundra? Something like that) is the same type as the diff used in the Mk2 Supra. That means you have access to a wide range of LSD's, spools and even air lockers.