I've heard of peeps doing this on early 90's to do away with leaking spheres, does anyone know what's involved? is it a simple swap old axel for new? I've seen a few axel's about on ebay with discs and calipers for about £150. I'm going to be doing the supension soon on my 'new' toy, so if it's an easy enough task then i'd like to swap the axel, as both of my sphere's are shot, and I thought it would be more cost effective to do the axel swap rather than change the spheres.