Hello Again Guys...
I own E39 528i 1996

after all those years of hardworking, Most of the speakers not working or make bad noise and the sound is not even enjoyable... I don't listen to any thing more than engine noise because it's more enjoyable than the songs that radio output!
so i want to know what is the Recommend Speakers Type and Size to change the whole car speakers ? and will i need to add an AMP ? i want to keep the OEM head unit! it still got tape but I'm going to get MP3 CD Changer so it will be like today cars sound systems

i want it strong and clear !
I think it's 2 speakers at back shelf. 2 rear doors , 2 front doors , 2 front tweeters ?
Thanks alot really!