Guys; Yes, I have limited slip, and I did add 8 oz. of friction modifier when I changed over to the synthetic. For the one week I had conventional 80w-90 in the diff, I did not have the modifier in. I knew I would be changing it to the synthetic shortly and couldn't see wasting the $10 for the modifier for 1 week's time. The clunking is clearly from the front though, at least, that's where I'm hearing it. It has been there for a short while, but getting progressively worse. I can't really say that I can feel it... . I have had the track bar bushings replaced, but I'm taking it in armed with a list of things you all have mentioned for them to inspect. I'm can't get it in until next Monday though, so if anyone else has any ideas or suggestions, they'll be appreciated. Thanks again.
Sam