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Old 04-06-2010, 06:19 PM   #4
mrray13


 
Drives: 2010 1LT RS Rally Yellow
Join Date: Oct 2009
Location: southern Illinois
Posts: 2,973
Quote:
Originally Posted by Sax1031 View Post
hard to define a simple answer.

mainly it was size, and not in Cubic Inches


It was mainly based on the distance between the bores of opposing cylinders.
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