Kitchen sink Overflow corroded.

[cabinscooter]

There's an old thread related to this but I thought it best to post a new one as, hopefully, my query is more straightforward.
We have a stainless steel kitchen sink and the chrome plating on the overflow bezel/grill is coming off. Is it a simple job to replace the grill and flex pipe down to the waste? Does it simply have a nut on the back and is it a standard size hole?
Here's the existing one (it's a bit scaled up) and a replacement I'm looking at.
Advice appreciated.

 

[cabinscooter]

Here's the coupling to the waste and the rear of the overflow grill. Looks like it's leaked at some time or the plumber was very messy with sealant.

 

[dilalio]

You won't know if that will fit until you try it.
Random amazon listings will promise everything is universal.
IME you'll need a complete new basket strainer waste with round overflow to ensure compatibility.

And no the plumber wasn't messy, it's been leaking.

 

[cabinscooter]

Thanks, I suspected that. I think one useful skill you need to be a plumber is to be a contortionist.

 

[dilalio]

Thanks, I suspected that. I think one useful skill you need to be a plumber is to be a contortionist.

2 elbows and 2 wrists on each arm