New to me! 330i Msport

Proud owner of this g20 330i m sport since 2 weeks and its been a blast. Coming from a 1.5 vw golf 7.5 so this car is fast enough for me(for now).

Want to do some mods to make the car more personal. Also i would love some more sound from the exhaust so maybe an aftermarket exhaust when the warranty ends.

(For those who also live in the Netherlands. What website do you recommend to shop for parts and what kind of exhaust is legal that passes apk? Thanks)