This is the ALL new designed Level 5 axles For the Neon SRT4 with up to 750HP (or more) this set of axles have been re-designed recently to have a larger center bar and new heat treat on the Inner housings. What we have done is this; we have increased the spline count on the internal bar from 32 to 36!! We also have experimented with a new heat treat on the female inner spline to make it ultra strong. The axle are still a bolt on design with the outer c.v. still having the ABS rings for you 600+ street cars (no changing hubs) and the inner will fit either the stock trans. Or Darrel Cox Racing's Auto. These axles are usually assembled to order so allow a few days for shipping. When you're ready for the next level here it is from the Drive Shaft Shop