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Old 09-05-2009, 03:18 AM
  #13  
Colt4g63
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Default RE: rb or vspec
The JX .21 edges it out all around on overall power and fuel economy. The JX .21 also has a more linear power band and a better carb by far, but does cost about 100$ more.... Both are great engines and well worth there price tag.
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