Back in 1996 I installed Duff's 3.5 inch complete suspension front and rear using his 70/30 shocks dual front, single rear. Now that it is semi retired from the off road adventures, I would like to change to Bilstein's, single front and rear........hopefully to soften it up considerably. Will just the Bilstein install do that? Where and how do I measure to obtain the proper shock with my current lift. Should the single front be mounted in front or rear of the axle. Where can I get the Bilsteins. Opinion and advice appreciated.