The td42 has a mechanical fuel pump which runs off gears from the crank, the same way the valve cam does.

So any aftermarket or electronic fuel pump won't be needed to supply the motor.
You just need to join main pickup line to the pump via a fuel filter.

As for ecu I'm unsure. I don't thing the td42 needs one as it's all mechanical and vacuum.
Unless you guys have a different newer variant over there? Here in aus they stopped importing the td42 due to emmision controls nearly 10 years ago..