Alan, I have a complete rear axle, wheel to wheel, I bought it a few years ago and it was New old stock. I put it in my Avanti and used it for about 500 miles. My car has a 4 speed and it the ratio was wrong for a straight drive car. The car just wouldn`t start off without slipping the clutch so I put the old 3:73 back in. It`s a 3:31 ratio Twin Traction.
Let me know if you`re interested in it. I`m located in Greensboro, NC Jeff McCain