I have a 67 326 HO Convertible with a wrong engine. I foud a 326 HO engine but I did not get the exhaust manifolds. I need to know what exhaust manifolds (casting numbers) that I need to make this motor factory correct. I am restoring car to original. Also I got the Carter AFB carb with it, can anyone tell where to find that carb number. I need AFB4243S. Can not find 4243S on carb. Thanks Art