My Signum gear knob is old and worm out, so I was looking to replace it. Does anyone know if the Richbrook 'Slant Top' For 'Lift Reverse ' will fit:

http://www.richbrook-styling.co.uk/g...e-shifters/120


I understand that the original gear knob may need hacksawing off. How does the new one fit, is it a spline?