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<p>[QUOTE=&quot;Boardhauler, post: 2011001, member: 23896&quot;]Delaney &amp; Ahlf built my 92 back in the late 70&#039;s. That was one sweet running motor. It did everything except get fuel mileage. </p><p><br /></p><p>I think a C15 Cat is the best driving modern motor. But if I was buying my own truck to make money I would lean to a Detroit. I have a friend with a 12.7 who has totally abused his, done virtually no PM &amp; is closing in on a million miles. I think he gets at least 1 mpg better than I do with a C15.[/QUOTE]</p><p><br /></p>

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