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Old 04-03-2013, 06:32 PM
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Makes sense. The only difference between the light duty and heavy duty L31s was the head casting and whether it was two or four bolt main. I'd go with the 4-bolt only because if it's only $40 more it's no big deal now, but they're worth a lot more to most people if you ever want to get rid of it. I can't believe how crazy people get over a vanilla 4 bolt 350 sometimes.
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