I ended up getting a parkerizing kit. "black oxide". I blasted all the bolts, cleaned them with solvent (DX330) and then threw them into the plating bucket. Waited til the next day when they were dry and cleared them with Acrylic clear. Bolts look great. Better than I expected. You can see them at the Nationals! lol Kit was purchased through Caswells. (ww.caswells.com). If anybody want some pics let me know. I also use a zinc plating kit from Eastwood.