Started adding to my 90 to try and drown out the noise which wasn't helped by a lack of soundproofing or stereo at all.
So far have 2 5“ speakers between the front seats a couple of 4“ in the headligning yet to be connected, 2 6x9s for the rear tub when I get around to panneling it out and a sub if I can be arsed.
The speakers between the seats work fine as they are but there is a definate need for better soundproofing.