Help needed for a newbie.<br /><br />Could someone please tell me if the block for a 1972 OMC 120 is the same as the block for a 1980s Mercruiser 2.5l 120?<br /><br />My Mercruiser's is cracked, but the rest of the motor has very low hours. I REALLY don't want to spend 1200 for a short block replacement, so I'm a bit desperate. <br /><br />I did a search, but could not determine whether or not this would work. Finding used block seems to be very difficult for this motor.<br /><br />Thanks in advance!