1970 ranchero. Would upper ball joints cause a clunking sound when stopping? I did check tie rods,centerlink,idler, and lower ball joint. But I don't know how to check the upper joint. I had to stop yesterday,6-29-13, because it's just to darn hot out here. I bought this car for my son but now I realize I don't know what I'm doing. My wife informs me of that,lol.

here's from an aftermarket supplier...kinda shows your geometry there~

Upper ball joints are checked the same way as the lowers. Also, if you have done that much, I would make sure you do a front end alignment soon. I guarantee that your alignment is out by quite a factor. It is too bad you already started the rebuild process on a piece meal basis. I would have suggested a complete front end rebuild kit from Performance Suspension Technology in New Jersey. Their kit with the poly-graphite bushings is fantastic. When you get the entire kit, there is a very significant discount on the front and rear heavy duty anti-sway bars.