what's the best method for fixing this problm. Should cutting out and replacing it with a new piece of metal work? This is a 2000 v8 Dakota sport addition....is this a normal problem

 

Replacing the metal is teh best fix, but is this surface rust or is it all the way through?

Surface rust can be fixed easily with a rust neutralizer which stops the rust and leaves a surface that you can paint.

If therese holes, well just cut and replace.

 

it is bubbling at the moment so it is surface. how much would something like that cost for both sides

 

Hard to say how much. Most body shops do give free estimates.