I have a set of practically unused FPA Tri-Y Headers listed to fit 66-70 Fairlanes, Torinos, Rancheros with a 390/428. They will fit a '57 with an FE engine. The issue I had with them is that they terminate right at the stock transmission crossmember making exhaust tie-in difficult. They also will not allow the use of stock clutch linkage. I went with a hydraulic clutch setup. If you are running an FE/automatic with a fabricated crossmember, these are a great set of headers. $250.00 plus whatever shipping costs are.
This is what they look like.
http://www.fordpowertrain.com/390428triy.htm
P.M. Sent on the FPA's.
Do you still have them ? What would shipping be to B.C Canada, postal code V0R1L6. Let me know. John
Sorry John, Sold em.