You only need them if you want to block off the exhaust crossover. The choke won't work then. Used for racing mainly. So, not really needed for street use.
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John Wallace - johnta1
Pontiac Power RULES !!!
www.wallaceracing.com
Winner of Top Class at Pontiac Nationals, 2004 Cordova
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KRE's MR-1 - 1st 5 second Pontiac block ever!
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