do you want a tubing header or an exhaust manifold ? exhaust manifolds are still around havto do a search lotta them are cracked. A tubing header can be fabricated some muffler shops will do them they arent too hard to build there were some guys here in T/B but dont see anybody jumping up.
keep looking they popup now and then.
check ebay and around the web http://www.buickpartsdirectory.com/bodyparts.htm
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