I RECENTLLY PURCHASED A 3.0 MERCRUISER WITH GUESS WHAT, YEP A CRACKED BLOCK IN THE WATER JACKET. THERE IS NO WATER IN THE OIL YET SO IM COMPTEMPLATING DOING A QUICK FIX FOR NOW, BUT ULTIMATELY I WOULD LIKE TO REBUILD THIS MOTOR WITH MOST OF MY CURRENT PARTS ON A USED BLOCK. HOWEVER I AM HAVING...