I am weighing my options to drop rpm on road and have located a nv4500 for the overdrive. In trying to get the total cost together for this swap I need to know if the input shaft will fit through the clutch and if it is long enough to reach the pilot bushing. I have the adapter kit that I bought from Bob and could modify it to adjust for length and mounting holes to line up. If any of you have a t-98, nv4500, or know the input shaft measurements and spline count please jump in here. Thanks for any help you can give.