5/16 or 1/2 spacer is better?

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Apr 15, 2006 | 02:52 AM
  #1  
I found Motordyne 5/16" Iso Thermal Plenum Spacer Kit VQ35DE and 1/2" Iso Thermal plenum spacer.

What is the difference between 5/16 and 1/2.
Which is better?
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Apr 15, 2006 | 08:49 AM
  #2  
https://g35driver.com/forums/intake-exhaust/95091-what-mrev.html
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