Fabtech 08-16 Ford F350/450 4WD 8 Lug 6in Basic Sys w/Perf Shks

TIRE SIZE - 35/12.50R20 WHEEL - 20X9 W/5" BS W/MINOR TRIMMING; TIRE SIZE - 315/70R17 WHEEL - 17X8 W/4 1/2" BS W/MINOR TRIMMING; TIRE SIZE - 325/65R18 WHEEL - 18X9.5 W/4 3/4" BS W/MINOR TRIMMING; 3. NON DUALLY MODELS ONLY.; 27. FRONT DRIVE SHAFT MODIFICATIO