Manifold 1938 series 60s

[Svein Mo]

Hi. I need a new exhaust manifold for my year 1938 Buick series 60. Does anybody know where I can buy it?

 

Seems manifold for series 40-50 available at Bobs Automobilia, but not for series 60 (same as for 80-90 I think). 
 

Thanks in advance. I live in Norway.