The fan clutch comes with the water pump.
can be split but easier just to change the water pump.
As for the fan, i'm not sure if its the same as the Diesel.
A quick measure across the mounting bolt holes and fan diameter will answer this question.
No the 2.7 is part of the water pump, the 2.4 is similar to the 2.8 Patrol, might even be the same, the viscous coupler is a separate part to the pump and the fan, Rick