Although it is done a lot and mostly people get away with it, just removing a leaf or two is not a good idea. Leaf springs are designed with a certain span between the ends of the leaves and this is doubled by removing a leaf, therefore the stress in the remaining leaves is increased a lot. It lowers the vehicle because it also reduces the effective spring rate.
De arching the springs is probably a better bet if you have access to a good spring shop and your current springs are in good shape. This essentially changes the initial zero load postion of the spring but does not materially effect the spring rate. Your can also add a full second leaf under the main leaf to increase the spring rate and still lower the truck.
Have you considered using monoleaves? I asked on this site earlier about monoleaf springs but there was not too much relevent experience forthcoming. The other sites I checked had mixed opinions and I was not persuaded to try them or not to try them.
When the springs are fully compressed and hard on the rubber bumpers, the shocks should be at the full comprerssed point of their travel no matter what springs you have.
Doug T
The Highlands, Louisville, Ky.
