Moogs are junk
I went with the Carli HD (lifetime) uppers and Moog lowers. After about 2,000 miles and going off road once for about 40 miles (no air time) the lowers have . 016" play on the drivers side and . 030" on the passenger side. Don't waste your money on Moogs.
Edit 5-4-09:
I put new O. E. ball joints in the lowers and still had some knocking on bumps so I measured play per the factory service manual procedure and with only 4 days I have . 027" play on the drivers side and . 023" on the passenger side. Factory spec allows up . 090" play (I mistook it to mean . 009", my bad) so it turns out the Moogs weren't junk after all. I traced the knocking down to a loose jam nut on the adjustable Pan-rod/Trac bar.
BTW, There is a lot less preload on the OE ball joints and the steering feels better as a result. (Brand new tight joints will give a vehicle handling quirks)