For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. S.O.S. (Single out side) systems are the perfect choice. Force II systems delivers a mild exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.Features: Mandrel Bent 16 Gauge Aluminized Tubing 3 Year Limited Warranty Stock to Mild Exterior Exhaust Tone Includes Hangers and Hardware For Easy Installation Connects After Factory Catalytic Converter Single Out Side Exit Dyno Tuned for Maximum PerformanceProduct Description: '87-'96 Ford Truck, F150, 1/2Ton, 4.9L / 5.0L / 5.8L, 2/4 Wheel Drive, All Wheelbases, 3.00" Outlet, 70 Series Big Block II Muffler, Force II, SOS, Mandrel Bent Tubing,16 Gauge Aluminized SteelPit Stop USA offers Flowmaster Force II Single Exhaust System - 1987-96 Ford F-150 4.9L/5.0L/5.8L 17135 at low everyday prices. Be sure to check out all our products from Flowmaster including Flowmaster Ford F-150 Exhaust Systems and Flowmaster Ford Truck / SUV Exhaust Systems.