Raising Rear End with a Lift Block kit on my Slant six

Springs are not all that expensive when compared to everything else we buy.
This is not a bad price, I am sure if you shop around you can find better prices.
Your old leafs are most likely sagging so you will have more that 1"
Dont forget NEW u-bolts, old ones will drive you nuts trying to keep them tight.
From Mancini web site.

http://chucker54.stores.yahoo.net/extraheavyduty.html