Thats very true. I know many people running aluminum driveshafts with great success however I have spoken to several people in the last couple of weeks who have been running aluminum driveshafts on their GN's and broke them. They switched back to the steel ones and not a problem. I have one experience with an aluminum DS and it wasn't good. But again they are great for some cars but for these GN's they really are not good. Even many of the vendors I have spoken to about this issue have said the same thing. The aluminums break and are not worth it in these cars. Beef up the yolks and the u-joints and they will out perform the aluminums all day long. I just don't think it's a good investment on these cars.