c-body axles

Caution, When i first built my car , i used a set of c body axles (moser cut and respine for me), with a 4 speed and a set of drag radials, i made 10 passes at the strip and twisted them to the point that i had a hard time getting them out, (almost 2 spline twist), so i bought a set of moser street/strip axles , that was 10 years ago with no problems.