Changing from a small block to a big block in a 68 dart. This car originally had a big block in it. I still have the small block motor plate. Is it possible to just lay the old small block plate on the new big block plate and transfer the mount holes to it? I guess you would need the measurement difference between the two crank centerlines to make the big block plate the same, but I don't have any small blocks around to compare it with right now.....

Is there an easy way to do this without making cardboard templates and trial and error?