Try the "fillingstation.com"
Lots of interesting stuff even if it is Chevy parts in general.

Honeycomb Rad cores--window channel-6volt alternaters--seat belts and much more
Good Luck

Just an FYI they get their radiator cores to order from New Zealand. They usually save up the orders for a month or so and send them in as one big order. Then the cores are made to order.

So, expect it to take awhile.

curt smith

Where Are You From? home1.gte.net/res02rxl/index.html

Do You own a car built by Durant? 1929 Model 40