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Discussion Starter #1
anyone know if theres a diff in the se 103 pistons for earlier kits and the big bore pistons for 07's. I know there is an -07 on the part numbers but if it was the same as the older 103 kits, why change the number?
thanx kevin
 

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I think that you just answered your own question.
 

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I've wondered the same thing, and can only surmise that the new versions are lighter to matched the lightened '07 rods. I know the new 96 inch pistons are now made in Germany and are a superior castings to those previous.
 
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