radiator puked need brand for 300D 1983

[lws1]

My radiator puked tonight. It's a Behr. It broke at the top, plastic broke. The same thing happened on my E320 1995 and the mechanic I had then replaced it with one that was not made of plastic at the connections. Anyone have any recommendations for one that is built to last and not the plastic crap? I looked at the parts tab here and the two they had were plastic and I also did a search with no results. (can never figure out the search here) Thanks, Lance