All Sweet Mfg. NASCAR steering boxes are 100% new, not rebuilt highway boxes with used parts. Quality is assured by extensive testing with our own in house steering box dyno. All boxes are stamped with an exact degree of the pitman shaft which allows the steering box to run on the center tooth, eliminating tight spots in the travel. The 600 gear uses a 3/4"-30 spline u-joint. part number 401-50615.
