I have bilsteins on my wifes explorer... TBH i wasnt impressed, after changing them i couldnt tell much difference over the moogs that were on it.
That said, i also run moogs on my bronco, and even with the 7.3 up front front, on the stock 1/2 d44 they work rather well.
***I dont buy the cheapy 40 dollar moogs, i buy the good ones... i would assume if i bought cheapys and went to bilsteins i would have a world of difference, as alot of people have noticed, but to me a good shock is a good shock, and you get what you pay for. If you want the best shocks you can get for 100 bucks total, then there will be a diffence when compaired for 400 bucks worth of shocks***