what can I do to them? can they be blasted and run bare? Ive seen them polished before as well how well does the bare aluminum take the elements? what about powdercoating? dosnt seem that it could hurt it, becouse I know many of us have machines that have unkown pasts and have a million and one spray bomb jobs on the rads and they still work well. I wouldnt mind getting them pc'ed with the same stuff that dreadhed is doint to my other parts right now, so let me know guys!