Ron,
While adding a leaf or two will raise
the rear, doing so will also increase the spring rate. Rate is the amount
of weight required to deflect a spring down one-inch. Increasing the
spring rate will stiffen the ride.
The best way to increase ride height is
to increase the free arch of the spring. There are 2 ways this can be
done. Provided the springs are in good shape the springs can be rearched/retempered
with a higher arch.
If the springs are not good enough for
rearching, then new springs will be needed to get the rear up where you
want it. - Mike