Well after looking for a copper/brass radiator (3 or 4 row) and even ordering what i thoght was a 4 row instead it was also plastic/aluminum and just when i i was ready to get refund parts guy says LIFETIME WARRANTY??? Hmm let me re-think the situation here:
the 4 row plastic/alloy has in reality 2 big rows that are as wide as old 4 row
i bet it cools better than copper/brass
no solder joints to come loose
its lighter
lmc sells repro BB shroud
and the kicker Lifetime warranty wth have i got to lose?