I just found this club today and I happen to have a header for the A12 Datsun 1200. I bought the header from Clifford 4 to 1 out of Calif. I bought it because my exhaust manifold cracked.
I only used it for about 2 months before I changed to an A12A head because the intake has water jackets and the header will not fit. The header is well made with about 1 inch primarys and
2 inch collector with about an 18 inch mandrel bent adaptor/extension pipe. It is not rusty, just discolored from the heat. Let me know if you are interested. I am also looking for a good
vacuum advance for my 80 model a12a electronic distributor I swapped into my 72 1200. Anyone interested let me know at CTINGA@aol.com