Everything is in title 

I am going to change the  mirror turn signal for dynamic one and i d like  to do the  same for  the  rear ones

 

Haven t find  anything so far on the  net. Is it impossible?

The stock rear clusters have a single bulb fitted so it's impossible with the stock hardware.

 

You might be able to fit some kind of kit inside but it'll take some modification to the clusters. I'm not convinced it would look great either as the light is quite square rather than a longer thin strip you'd normal associate with dynamic indicators...

 

There might be some aftermarket rear clusters somewhere that support it but I've never looked 🤔

As above, cluster shape doesn't really lend itself to dynamic which might be why it's proving hard to find.

Just repeating above basically. Can’t say I’ve ever seen something for the Mk3. Using an LED replacement lamp seems to be as far as you can go with this.