What is it you are planning on using for bat wings to connect the radius rods to the axle?????? A bunch of grinding and cutting on the axle you have now is certainly not a recomended procedure.... With everybody wanting to have the "gasser" look these days, very possible that you could trade your dual eliptical axle and spring setup for a transverse spring type of axle....????? IMO, a whole lot better deal then cutting and grinding the spring mount pads off the axle and welding on some batwings on the axle you have now.....