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My service manuals all have the earlier version of that engine in diagram form and then half hearted addenda to accommodate that engine. The exhaust side is pretty sparse though.
Was there something you were wondering what-the-heck it is?
The attached photo of the inlet side shows the knock sensors.
They are just under the water rail & directly down under inlet 2 & 5.
Jaguar part is LHE1692AA which is identical to Land Rover part LRO23359 (probably more available)