Hello, New member here, I have a 68 400 convertible on it's way from California. It has a 2.56 gear rearend that i'd like to change to 3.55 gear. I need to know the axle spline count and if the rear has c clips or bolt in axles, also what trans gear do I need to correct swap so speedo is correct? This is something i'm looking at ebay ad 391355941901
