I have done my own on my snowmobiles and my DR650 in areas that are very critical and hidden from the naked eye.If I could buy metric bolts, drilled for safety wire, for the brake rotors and rear sprocket, maybe a few other places, I'd do it. I'm not going to drill them myself. We could probably obtain some from Russia, assuming they build airplanes with metric hardware and use safety wire. Airbus hardware is not metric.
Have any of you seen metric hardware with safety wire holes? My bike has safety wire on the grips, just because I can. I have plenty of stainless wire and Blue Point safety wire pliers.
The engine mounts under the engine, hidden in the belly pan on the sleds and the neutral safety switch behind the clutch basket on the DR650.
I used allen head bolts and allen head screws that I drilled through the heads in my drill press....worked like a champ.