To further aid me on my IRS cad design does anyone know the rough dimensions of the above, length and width at either end mainly. And any dimensions for sierra diff (lobro push in) or shafts would be nice. I am buying some of the bones ( so am not just ripping them off and copying) but havnt quite got the money to order em yet (student) and want to get on with design. Which would of course be duly shared with anyone interested. Cheers, Jon