Package Dimensions:6.75H x 15.50W x 26.75D Weight: 32.80# Progressive spring, designed for increased handling and performance Lowers 2005-08 Mustang GT approximately 1.5"Use with M-18000-A and M-5490-A for optimum performanceNote:Some factory fasteners are one time use. Please reference service manual for reuse information and correct torque specifications.