Once you go over 3", the costs start adding up exponentially for each inch. If you trim your fenders, you could run 33s and do some bump stopping. Otherwise, you have to start spending money on the front components. That means at least a new lower link and track bar, and unless your shocks are a little long, new shocks too. You will also have to relocate the front brake line mount or get new front and rear bake lines.