Part # Chevy-SAS-002 Price $399, 36.5 wide spring perch kit.

This is a kit that will add 6 inch's of lift over your springs size, so 12" springs nets 18" lift. Current kit can be positioned to almost any height up to 6 inch by moving rear shackle hangers up the frame and re drilling front spring eye. 3/4 and 1 ton frames will require minor trimming of front hanger due to frame cross member that is not removable like a 1/2 ton.