ATP designs
Mustang S550 IRS Swap Coilover Kit
$685
This is a full or partial kit to convert Mustang S550 IRS swap suspension to coilovers. This is most often used for F100 pickups that have S550 IRS rear suspension installs. The full kit comes with American made double adjustable coilovers with springs and mounting hardware along with upper mounting tabs to weld to your frame for mounting the coilovers in the correct location. The lower mount will mount in the original shock location on the lower control arm.
This kit is also available without coilovers so you can use your choice of coilovers.