I need to replace the middle dash speaker on 2004 GS300 with ML nav system. Any idea where i can get a suitable replacement?

 

eBay
local junkyard
Facebook Marketplace
Craigslist
the For Sale section of this site

 

Thank's! i'll give it a go

 

Different generation but may give you some ideas
https://www.clublexus.com/forums/gs-...placement.html

Getting used doesn't make much sense to me it will probably not last that long. If you can't find a good match at places like Crutchfield this site has just about every type of speaker imaginable.
https://www.parts-express.com/

 

What's the issue with the original speaker?

 

Rattles like it is likely blown. I haven't removed it yet but will soon. Maybe i could refoam it.