I also figured out why the motor was knocking when it was removed. Also called local engine rebuilder and $35 to have the block cleaned. Not sure if that's dipped or what their process is, but it may be worth it. I am thinking of a grey or silver enamel and new freeze plugs. Unless I can find someplace that can powdercoat it. All i need to do is get it to fit in an oven, right. I may be looking for a one time use oven!