Monsoon Stereo In A ThirdGen ?
So yes, you can put a Monsoon head unit in your 3rd generation - it will fit perfectly and plug right in to the stock harness (you may need a plug adapter for a mid-80s model - they're available from Pep Boys for a few bucks). However, you won't gain anything but a different look - it will work just like any other factory radio.
Adding the complete Monsoon system (amp and speakers) is possible but not worth it. The sound quality is not good enough to justify the expense and work involved.






