The aluminum elbows from ZZP are the same as the ones made by Dorman. You can get them from O Reilly's Auto Parts for about $12. They're the same part # as the plastic ones but with I think HP on the end of it. They had to order mine but they came in the next day They work great. They're a lot tougher. You'd have to work hard to break them. I put them in a couple of weeks ago when I did LIM gaskets and a new upper intake and have had no leaks at all.