I know I put a set of Hooker headers on a 63 I built back in about '89 that seemed to fit good if I remember correctly. It had a small block "not very stock" 400 in it. It seems like I just ordered what the catalog said would fit. Those are fairly common headers since those pickups came with small blocks in them. Do Vortech heads have a different exhaust port configuration than the earlier small block heads?

Jeff