Who takes it assuming Hunt would be in his prime at the age he was back in 2001. Check this out; http://www.youtube.com/watch?v=ehxZ_WMW_0I
The whole problem with this is that Hunt would know absolutely nothing about grappling at that point. He may not know enough to survive now, but he has a much better chance than he did then.
In reality he probably missed his prime. He is 38 now the prime for most HWs is between 30 and 35 at least in boxing and he started late with kickboxing and even later with MMA. He missed what was probably his prime
I'm assuming he would have the same grappling skills as he has now, but that he had the physical abilities from back them.