The junk yard or eBay. It all depends on the level of perfection that you are seeking. I've not been able to find a perfect one in the junkyards. An alternative is to make one good one from two damaged ones.
The door seals on mine have torn at the rear of the door opening from people rubbing them getting into the back seat. I've just replaced with used ones and been happy. The seals are not side specific so can be used on either door. John
No Problem. Dan's a GREAT resource. He's helped me out with many, MANY things so far, and will hopefully be able to help me as I finish up my Project hopefully by next summer.....