This is an improved version of the heavy-duty steel driveshaft used in our 1997 LT4 Firehawk and Camaro SS car program. Now equipped with even heavier wall tubing, it's significantly stronger than the stock LT1 and L98 steel shafts as well as the 1LE aluminum piece. New features include a harmonic balancer on the yoke that further reduces drivetrain vibration over the previous design. We've even lowered the price!