John, we have engine hanger covers. They are laser cut from mirrored stainless steel. They cover around the key on one side and the fuel control knob on the other. We also make a custom set that is for those who have removed the petcock knob and installed a Pingel or other manual petcock You can see and/or purchase them on our web site.
www.valkyriecarbsandcustom.comDave
Or get some 1/16" aluminum and trace the bracket & holes. I painted mine black to finish the look w/o the ugly arse holes etc. Easy cutting on table top band saw and the slight bend was done in my bench vise.