Depends on the first gear ratio. If it's the more common 2.23 they are a dime a dozen. If it is the less common 2.43, then people will notice. If it's the 2.64, then you have something. The problem with any AMC T10 other than the 2.23 version is that they are weak transmissions. With a 2.64 and a strong 401, from what I have been told numerous times, the lifespan of the transmission is not long. A few good full power launches and the input gear and cluster gear are toast.
