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Forum: Pontiac - Street 12-09-2022, 08:46 PM
Replies: 49
Views: 3,441
Posted By lust4speed
We did a bunch of testing on a friends 66 GTO and...

We did a bunch of testing on a friends 66 GTO and found out the only booster that equaled the original 11" stock unit was a dual diaphragm 9" booster. Neither the 7" or 8" dual diaphragm units...
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