Mid plate mounting
That was like mine from S&W was for a center set up,so had to trim a lot off on the passenger side to get it to fit then cut out for the exhaust. Course found out about the center when installing the engine, at least you were smart to use just a block lol wish I did that first instead of what I did. Had to name a spacer to weld to the frame to weld the mount tabs too on the second pic.