I would be careful, as standard the head gasket is a weak point, also the health of the engine needs to be assessed.

Fuel pump isn't required, BUT it's wiring degrades, which means the pump cannot draw the power it needs, as a result the engine does not get the fuel it needs = meltdown.

This along with the fan wiring are two common issues, rewire kits are available for both.

There are plenty of RS 500 style intercoolers, which are a direct fit.

I would advocate someone check fuelling and set afterwards.

Martin