RS3 REAR DIFFUSER TO FIT A3 SLINE

[Jodiegreig]

Does anyone know if the RS3 diffuser is a straight swap for the a3 sline diffuser or do you need to replace the whole bumper?

I want to fit this
Audi RS3/S3 rear bumper diffuser new genuine | eBay

to my a3 sline black edition 60 reg

Thanks

 

[discostu49]

Whole rear bumber for a 60 plate

 

[discostu49]

Only fits the s3 rear valance