with a 505 and 700 hp, and probably a heavy car, you will snap the 10 bolt like a twig. Put the dana in it. They are not that much heavier, not like you need a forklift to move it around..if you are buying axles anyway, get em for the dana
...now there will be guys come on here and tell how they are running 10 bolts just fine in their 2000 hp blown pro mod street cars.... :roll: