shawn,,,sorry for the delay , i didnt see this in my e mail,,the posie springs are the same as factory width,,they bolt right in,,and lowered the car, ride much better then the orignal replacements that were in the car,,about 2 inches lower then stock, also the shocks were built for those springs and mount like the orignals ,they were made by a company in calif,but there parent company is bilstien,. , bilstien sent me to posie they had them on the shelf,posie never offered info reguarding there where shocks made for the springs,,hope to have it back runing and at macungie next year e mail me any time fstfish66@aol.com don