Is a Edelbrock performer RPM manifold too much for my combo?

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I let my neighbor borrow my RPM because the ear broke on his Performer. He had a bone stock motor except Long tubes, prochamber and muffs. The RPM band moved up about 500 rpm. So at full throttle with the stock intake he shifted at 5100rpm and with the RPM he needed 5600 rpm. Plus it needed more RPM to get it moving. With your future mods its better.