I dug a 1967 425 out of the engine row and this manifold was on the pass-side. I should write down the history of these engines because a lot of them are similar and they are all blending together. This car was in fair shape but no title. It was in a field, divorce, yada yada. P.O. had put dual using the exhaust crossover pipe and this manifold, both pipes running on the pass-side then splitting in the rear. I sold the car to a demo guy. I forgot about this manifold till yesterday. The drivers side was the factory B/C (88/98) center dump. I'm pretty sure this is from a 403 Toro. The height of the larger center opening is 0.09375 taller than the drivers side factory 425 exhaust manifolds opening. #'s are 554 581, D1-Y with a large B. Ken

 

I want.