Issues with 360 engine mounts
Like this. Likely why engine wont sit level. Mounts are on wrong sides of the block. You shouldn't have had to drill any new holes. Like I said. I sold 8 identical sets of these things. Nobody else had an issue with them.
Drivers use mount has 3 mounting holes for the block. Passenger side has 4 mounting holes for the block because passenger side mount is the same mount used on a 318, and some 318s had 4 mounting holes on the passenger side of the block.