have you tried m-k-racing, apex models, pbm etc? If your really desperate then B4 shafts do fit but don't fit them with any internal preload spacers in them as they are about 2mm shorter so don't need them or you can undo the rod ends a couple of mm, they shoudn't come off doing this and your shocks will still have the same amount of travel and be same length either method you use
i've had to do this at a race meeting when I had no spares and it worked a treat
