Most stock-resembling exhaust for the AE86?

[DaLanZhu]

Hi guys!

I am in the process of getting my AE86 cerified for the road and some of you might know that in Germany this can be quite a pain... the TÜV is super strict with everything that does not come with a German datasheet, is slightly louder, or looks suspicious.

My main problem is the exhaust - it is stock, but quite rotten, and I would like to put something new under it. I have a variant with a cat.

Do you have have some experience what exhaust has the least effort in getting registered? I want to register it as a vintage car, so it should be something that isn't too loud, looks similar to an OEM exhaust, and perhaps is also of higher quality.
I'm a terrible driver so I will only drive it on sunny sundays and similary, so I don't care if it has some impact on performance.

Judging from online pictures, the HKS sport looks pretty decent, and not too loud. Someone here in Germany has some experience in getting that registered?

Many thanks in advance!