Will a '74 4 speed transmission bolt up to a '73 3 speed transfer? I know the 3 speed tc is 10 spline and the early 4's were 16, but I was told that a '74, being the first year of the 4 speed, had 10 splines. Is this correct? If not, does anyone know anything about the adapter? Is it a new output shaft for the trans, or different gears for the tc? Need help.