Truck accessory stores, fleet supply stores, and ag supply stores should have the hooks; if nothing else check ebay. Alternatively you could get a recovery bumper. I should get mine finished this weekend I just need to put plate lights on it.

You might be able to bolt something on where the hitch is (or would be) bolted to the frame. I wouldn't pull much from there without the frame stiffeners though, it isn't really built to take a lot of abuse.