Airbox upgrade - AMG, Renntech, etc

[turboGT]

Good evening,

I've been making some research on how to mod the W220 S500 air box.

I found some threads talking about replacing the airbox with AMG, RennTech, etc airboxes. As per dyno sheets, they gained some HPs.

What do you guys think of this mod?

Thanks

 

[Auto-mobile]

I think £1500

 

[turboGT]

I think £1500

Quite expensive but might be considering to buy a used one.

What are the other options? Which AMG airbox can be fitted on a W220 S500?

Cheers