383 on ABody BB KFRAME?

Yeah, it`s an "F" HP 440 engine, identified on the block by the distributor. It has the bosses on it but they weren`t drilled. I drilled and tapped them myself. From what I`ve gathered, the bosses are there for cars that used a certain power steering pump and that`s where the brackets were attached. (?) Do you have a picture of the M code mount that you could post?