I have 2 drivers side exhaust manifolds, got them in a parts buy, they appear to be 340 driver's side upswept HP manifolds, they could be upswept 318 A body maifolds?, but the ports look rather large for 318 applications?
Sorry no pics, the casting numbers (albeit a little hard to make out properly) are: 286356 or possibly 288358 with a casting date of 12/11/8, the other manifold identical in shape however has a casting number of 2883653 and a casting date of 10/30/8
I looked at various sources trying to ID the casting numbers, no luck, anybody have a clue
Thanks
Mike