In September this year I purchased a 24' 1975 Sabrecraft, powered by a Ford 302 (188hp) and Mercruiser Outdrive. Alpha I think. I love the boat, but when I had it winterized last month the shop asked me if it had been over heating. Yes it had over heated a little, but I just figured it was an old engine and I kept the RPM's under 3000 and it never over heated. They informed me that there may either be a bad head or head gasket. The repair would be approx. $700 if the head was cracked.<br />But anyway the boat seems under powered and now I looking at the possibilities of exchanging the 302 for a rebuilt 351. Would the additional hp be worth the extra $1500 or so. I love the boat and plan on keeping it for a long time.