I have 2 '57 35 hp evinrude larks. I have had one running for a short time. My problem is that the gas tanks that I have are corroded really bad. They are the old metal tanks that pump up.<br /><br />My questions are:<br /><br />Can this motor be changed over to a fuel pump and a tank that has a pump ball ? <br /><br />2nd , Has anyone ever tried this gas tank sealer in an old boat tank?<br /><br />I was told that I could seal the tank and stay with the original fuel set-up.<br /><br />Any imput would be appreciated<br /><br />Thanks!