upgrading the base audio system. Suggestions?

[Allenpien]

I am probably going to upgrade the audio system. Probably to the Harman Kardon system. The amp and speakers are available on ebay. I know that I will need additional parts like the a pillar trims and wiring harnesses. any suggestions as to installation methods and parts needed?

 

[TheAirman]

You might want to rethink that. Finding those parts will be tough. Doing it even tougher. Stick with Cruthfield.

Follow along here:
https://www.bimmerfest.com/threads/...ardon-conversion.1464176/page-3#post-13917779

 

[iCJ]

I am only here to hear the ideas and result of trying this. The non HK system is weak an the only thing I dislike about my space mobile.