I'm running the stock Fabtech shocks on my 6" lifted 99 ,and they suck.The bushings on both fronts are shot, and they bang and knock wonderfully.I'm looking at Bilstein 5150's all four corners,here's the part #'s
(2)bf5-a195-h1 5150
(2)bf5-a187-h1 5150
(4)stud adapter for my application

and a link

I picked the stiffer? valving of 255/70.Anyone running these?Should I go with the softer 170/60?

 

You're not going to get any feedback on valving on here...I've tried a few times for my 7100's I'm shopping for. You're gonna have to go to a specialty shop with guys that do this all the time. Camburg Engineering or any Fox dealer will help you out or point you in the right direction. Good luck.