Just installed a set of BDS 2" spacers today. Rides a bit rougher and bottomed out the stock shocks a few times, even once over a bump on the highway. Looking into the Bilstein 5100's for the fronts now. Never had a problem with my 98. 5 on the highway, but could bottom them out off road or driving fast over cattle guards. I would suggest getting shocks as well if your going to go with a spacer lift prmizeski, it should ride better anyways from what i've read on other posts. Spose if you want it done right an alignment would be in order as well, but never had them done on previous trucks.