I bought a little 86 4x4 for a couple hundred bucks and the main defect outside is the front bumper-its NOT destroyed it is not stock but it has been tweeked. will it cause harm to the frame to heat it up to straighten the frame ends out? i work in a big auto shop and hate the current bumper-i would actually not mind a flat black 2x6 piece of wood but the techs like the old bumper-we have compressed air ,welder and torch but no plasma cutter, we have most any other tools and hoists too, any ideas are welcome