I am building a '32 highboy electric coupe, and if all goes as planned (HA), it should weigh no more than 1200 lbs - on the heavy side. I am going to be connecting an electric motor straight to the diff. Obviously, weight is a huge issue in an electric car, so the rear axle needs to be seriously lightened.

Those old Jaguar diffs weigh about 95 lbs, does anybody know of anything lighter?