Underbody aero mods

For a bit of light reading have look HERE.  I am interested in whether these parts are cross compatible with various MQB models.

For those who haven't read the above: the headline is VW designing, but not fitting, underbody aero parts to stock cars.  Part numbers are listed and tested on a MK7 golf.  Improvements are noticed in sound reduction and suspected economy.

I am making wild assumptions that my Passat GTE is similar enough to the Golf GTE and Superb that part should (might?) be compatible.  My focus is on the exhaust tunnel and maybe the rear axle cover.

Anyone else had a go with this stuff on a superb (or any other car)?

Edited 16 November, 20223 yr by MarkyG82
Added link