Our new mini-tubs will save you hours of work and effort when making room for larger rear tires under your Mustang. The wheel tubs replace the inner half of your factory wheel tubs with a newly stamped, 18-gauge steel tub. Additional clearance is 2" and will accommodate up to 315-section width tires. Installation requires removal of the factory tubs and welded installation of new tubs and frame rail inserts. Frame rail inserts and gusset plates included. (also sold separately).