Local machine shop has re-done the exhaust studs on a few manifolds for me over the years, every time I get them back it has a bronze stud and a long brass nut on it.
Makes my life so much easier in the long run, well worth the cost and time to track the stuff down.
My oil line fix
My 100k stopped odometer fix
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.