I have a converted 404 rear axle assembly with a 504 wagon hypoid diff very neatly spliced in-4.2 to one ratio-in good cond. complete including torque tube, splined to suit BA 7 box. Although it seems sacriligeous to not have a worm drive under a 404, someone might want it for a project which involves horsepower, or anyone who wants to fit a higher diff ratio to their 404. Currently in Brisbane, available at cost, delivery possible within reason