Gas Tank Reconditioning

Does anyone know if a gas tank can be reconditioned to look new? If it is possible how is it done? My tank is in good shape with some minor surface rust and undercoating. I was hoping to remove the undercoating, sand off the rust, boil out the tank and re-plate or paint the tank to look new. If it can be done for a reasonable cost I can avoid buying a new one.

Thanks