Have a 2015 AWD CX-5 2.5l and have bought a boat so would like to stiffen the rear suspension. Boat would be under 1000lbs. All I can see are a spacers to space the existing coils. Was hoping for a progressive tensioning cargo coil style spring. Used to be called Cargo coils in the 80's lol . Have seen mostly air ride systems at 1000's of dollars. Just wondering if anyone has any ideas. Have googled and searched this thread . Any help would be appreciated. Thank you. Be safe. Wayne