When I bought my duster, the previous owner and his father worked in a wrecking yard and said they pulled the three eighteen out of a police interceptor.. it not only had a windage tray, but it had three sixty heads on it as well..
Here we go again trying to figure out ma mopar...
Yep. 318 4 barrel with 360 heads. There has been talk of those in the head /intake discussions about port mismatch. Mopar didn't care enough about that to cast a new manifold or redesign the heads.