It's not very straightforward as you need special tools to get the casings apart. Basically what has been said is correct, bellhousing/front casing and input shaft from the V6 MT75 4x4 gearbox and the back end/internals from the DOHC or Diesel box. The Diesel box will give you a top gear ration of 0.75:1, the DOHC is 0.82:1.