[GM man]

Here's my response from Deaver:
We can make springs that will ride better but the minimum lift height on the front is 4 inches over stock so along with that comes the need for new steering arm, shocks, brake lines and such. You see the starting platform of the tapered front leaf that sits flat and to go to a progressive design that utilizes a high leaf count of thin material between stack thickness and the need for some positive arch at ride height is why the minimum lift up front is required. They run $750 per pair and take 5 to 7 weeks to produce.
Scott Born
Operations, Sales and Marketing
Deaver Spring Inc
902 E. 2nd Street
Santa Ana, Ca 92701
714-542-3703
714-542-2898 fax

Jeff, thanks for that info. I'll try to get in touch with Stephen at Off Road Design.