Eddo said:
If you don't have the CRD, then Rusty's is probably your best bet.
If you have the CRD, then the Daystar is your best bet.
Eddo, he asked about a spacer lift, not a coil lift.
By all means, disregard Rusty's spacer lift!
The RRO 2.125" Combo is a very dependable spacer lift, just add a 3/8" Clevis lift to the front and you're about 2.75" to level the front out to match the rear 2.5". A new set of Rancho H.D. struts would also be a good idea while you have it all apart.
The Daystar 2.5" front is an inside the coil spacer and will really stiffen the front end up to the point you won't like it.