Performance Accessories makes a nice body lift kit that replaces the oem body mounts.
Or you can do the NHL 1" body lift for around $25.
I wouldn't go more than 1" on the body lift, any more is unsightly and can add a lot of stress to the body bolts and mounts.
Most spring kits are 2.5" minimum, cost more than a body lift, and generally require more modifications or changing of parts.