rockwells would be cool, then you could run some 49's. I swapped in the poly rear axles and rear discs. The shafts should be stronger to prevent the axle shaft from going on vacation, and if it does brake then the caliper should help keep it around. i think this would be the easiest way for you to dodge this weak link. but if you manage to build a eliminator kit, let us know what you find and how it goes. i see moser engineering doesnt make this for toyotas.