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Old 02-16-2008, 08:15 PM
smeredith smeredith is offline
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Join Date: Dec 2006
Location: Littleton, co
Cobra Make, Engine: SPF 2482 Shelby/Roush 427
Posts: 52
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If I remember right the 500 was rated up to 550HP and the 600 was somewhere around 700-750. My motor was rated around 530hp so it seemed like it was getting to the high end of the 500 but would be ok. I ended up going with the 600. The cost was only slightly more and seemed like a safer bet in the long run. I don't know if that helps, but safer then sorry.
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