The ESP Guitar Company

I know it's frowned upon but I really am thinking about buying one and sticking a humbucker in there, and my question is aside from buying a new bridge piece would I have to do some wood work? Or is there space under the bridge piece? I played one at a local store the other day, loved the look, loved the feel, but the tone was slightly lacking for what I like to play . I used a Line 6 and dialed it up how I always do, so it's not the amp, it's the pickup. Alternatively, does anyone know about a good single coil pickup that has a good tone? Thanks, and please don't come burning down my apartment!