[V8] spring length

[dsaad at icehouse.net]

It is time to rebuild the rear suspension on my car.  One shock appears to
have puked out all its oil, and it is just time miles wise anyway. So -
I want to have the springs reconditioned and lengthened by a 1/2 inch or
so.  More if I can get away with it. I need the extra clearance to get up
my driveway.  The question is - does anyone know what the stock spring
length (front and rear) is supposed to be?

Also, any btdt on which rear suspension parts I should be changing while I
am in there?  I plan to change the diff oil, and axle boots if needed as
well.

Dave