I'm getting ready to pull the old Mercruiser 4.3L engine from 1994 20ft Bayliner with Alpha one outdrive. I just pulled the outdrive. Do I need to disconnect anything that is behind the engine or just the 4 motor mounts and pull her out??? I have it down to the block. No heads, exhaust etc. I have the Seloc manuel but it is diffucult to see behind the engine. Something has to seal it all in I would think.????