Thanks guys. I think I have the 273 manifolds. If i knew how to post a picture I could put up pics of my car and what the manifold Im trying to use looks like.
I have a 1965 dodge dart which came from the factory with a 273 and 904. Somewhere along the way it lost the 273 and i picked it up with a 318. The car was totally taken apart and has had been repainted now and im installing a cast crank 340(1973) with J heads. I purchased the schumacher 273/318...