I would recommend replacing that intake as soon as reasonable.
As for alum valve cover...I would opt for M56 alum valve cover with built in CCV and not the Chinese-made replicas of the stock valve cover.
If you go M56, be sure to buy it with gaskets...which last longer. And you may want to replace the built in CCV diaphragm and cap...
Your newer model pencil-style coils and coil wiring will drop right in.
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'03 530i - manual swapped - 425k miles
'06 325Cic auto 115k
'05 X5 3.0 auto 158k
'99 E39 528i 5-speed 130k
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