I was wondering if your car would go any faster with the Indy dual plane that I run. As far as I know the intake comes in standard port and can be opened to Max Wedge size easily. I believe it has bigger runners then the RPM and I don't think its any taller. Just a thought as that way you could still have the good low end of a dual plane and it should outflow the RPM you are using ? Just a thought ? Ron