(I'm asking for a friend in Australia...)

He obtained this car from a trade with a friend. It does not have the original fuel distributor, ignition module, and ECU's that would have gone with this M104 engine.

What should the part numbers should be for all three?

Can he substitute parts off of an M103 motor (Fuel distributor, ECU's, injectors, ignition module) ?

Thanks.

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio