As I remember, the 45/5500 tow hooks will bolt up but only one set of holes line up with the existing frame holes on 25/3500 frames. Should be easy to adapt.
Does that mean drilling of the frame is required? Do the 4500 tow hooks go directly to the frame?
I'm surprised to hear about the issues with the 2500/3500 tow hooks. They're the same ones used on the power wagon and I imagine those vehicles see quite a few recoveries. Maybe the issues with the 2500/3500 hooks aren't widespread?