The F2S Watts Link uses 3/4 inch, 22,000 lb. static radial load, molly rod ends with PTFE liners and anodized 1.125 aluminum arms. The propeller is machined from billet aluminum with two 3/4 inch center bearings and is mounted on a .125 steel framework. Both the spring perch/Watts arm mounting plate and the axle mount are constructed of 1/8 and 1/4 inch steel. All hardware is machine grade, grade 5 and grade 8. The F2S Watts Link requires drilling on some applications and (NO DRILLING IS REQUIRED ON THE S197 Mustang and Gen 3 and 4 F-Body APPLICATIONS) but no welding and can be installed on cars with standard or staggered shocks and fits all axle housing diameters. Installation can be completed by the average enthusiast in four to six hours. Most over-the-axle dual exhaust systems will need to be modified to fit (NO MODIFICATIONS TO FACTORY EXHAUST REQUIRED ON THE FOX, SN195, S197 and Gen 3 and 4 F-BODY APPLICATIONS). Finally, a true watts link that fits, requires no welding and makes a serious difference in how your Mustang chassis deals with cornering and braking loads. Because the F2S Watts Link will make a dramatic difference in the control and feel of your car, it is perfect for street cars, track day cars and all out racers.