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Northstar powered car vs Bonneville GXP

2K views 1 reply 2 participants last post by  Highline Cady 
#1 ·
Hi, I dont know if this is the right section to post this since its not specific to a model. My question is, what are the differences between a Bonneville GXP and say a Northstar powered Seville of the same vintage? Does the GXP have better/higher flow exhuast than its Cadillac counterpart? Thank you for the info.
 
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