I want to buy a Mercury 50 HP Serial # 5797448 to hook up to my 16' Sea Nymph. I am going to hear it run before I fork over the cash. Any thing else I should look at?(Besides Compression)<br /><br />What is the reliability of this motor? Are parts still available? Any special features?<br /><br />What year is this motor?<br /><br />Thanks in advance!!