You'll probably want to, at the very least, put a class V receiver on the truck. If you don't want to buy a new one, you can reinforce the stocker so that it can stand up to the occassional sled pull. I'd probably reinforce the Class V as well. I've seen my friend's Reese TowBeast begin to bend after one season in a 2.5 Class - and, no, he hasn't had any terribly harsh hooks either.
As for the hitch itself, the above posted thread has several good ideas.
Good luck