I had some naturally asperated 3208 in some old Ford 10 tons. They were gutless pigs. They started every day even on the coldest days in pittsburgh. We drove these trucks to death. They all got regular mantinance, but all had between 300,000 and 600,000 miles. They ran all right, nothing spectacular, our b-series motors would hold up better in this situation. If you want a real Cat motor, use a 3406 / C16 engine. It would be worth every cent, if you could make it fit under the hoodOo. Oo. Oo.