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Stan is there any performance increase to using the crawford plenum vs the stock?
It is slightly better than the stock one as it eliminates 4 of the 6 mounting studs inside the pleum for more fluid air flow and it is flatter across the top and not angled for more consistant air flow to all cylinders. It also is the equivient of at least a 1/2" spacer. Being a fully cast aluminum plenum it will also be good for boost.
The only downside is that I will be needing to sell my circut sports strut bar as well (and I really like my strut bar). So that will be up for grabs if anyone wants it.