Thank you Sanderson headers - installed on my cuda

Streetwize said
I just talked to Carlos, It sounds like they have developed a new part number with the #1 tube mod for early A's, it's Sanderson part number DD9.

I think I'm going to have them make me a dd9 for the W2 Flange for my 66 440" /360 wagon

The link for the DD9's says they don't have the pic updated yet so hard to tell if they are the same as the OP's.