My 2cents/// if you change the 6x9 it will not make it difference since you have to change the amp to make it sound better.
This is what I came across my search and what I did:
Check out my thread :
https://bmwi.bimmerpost.com/forums/s....php?t=1903524
Hope that helps
__________________
BMW I12 i8 Frozen Yellow- H&R springs, 22" Radenergie F10 Monoblock Forged ///
F87 M2 Aw -Vorsteiner Aero Kit, VFF-107,Macht Schnell-Springs,VF-Engineering/Hex tuning Stage Two,ER DP,Stock Exhaust,Drop-In Bmc Filter,AA Intercooler,FTP Charge pipe+boost pipe/// Wish list :Mexico delivery 2024 BMW M2 (G87)