What Lambda sensors to purchase for my conversion? (GX NonT)

[M@H]

Hi All,

Please can you help me out as I am trying to ensure I order the correct Lambda sensors for my conversion.

I have a 53 plate 2.0 non-turbo which I would assume is an EJ201. As its a 53 plate car I'm not sure which side of the 2003/2004 model changes it falls, and if that makes any difference at all to the parts required.

In here you will see a photo of the part of the original exhaust, with one of the sensors in place, which I hope will aid identification - also the new exhaust
https://photos.google.com/share/AF1QipOXFmI2xWxsmWcHIBOMWGCIugxPgbQ1wYkk8fcu_FtMczo1aPgfQn1U6KiL3cb39g?key=RWN4bUsyWldkSlJ5R1hBYTcyRl9iRUJVOGt6TkVB

If anyone can point me at the right sensors, and any other thoughts that would be great (and a quick shout out to Richard at rjes who has already given me some thoughts on positioning any new ones)

Many thanks in advance,
Matt.

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