Acquired a 64 Cutlass parts car full dead animals and other related good smelling stuff. My summer project ( over 100 degrees) is to sort and identify the goodies. Listing on this thread the exhaust manifolds, as follows:
380001 LH 3X
381921 RH 3X
384784 RH 2X
579279 LH
579278 RH
411962 RH
563619 RH
417754 RH
408301 LH
398708 RH
398704 RH
398704Y RH
558319
The car is located in CA , the manifolds have surface rust but are not pitted. Some have heat risers. Can send pics if any interest . John