i dont know about your first question, but here is a good rpm calc to see what your rpms on the freeway would be with any gear ration/trans setup.
http://www.5speedtransmissions.com/calculator.html
vic in redondo
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Vic in SoCal. Follow me on Instagram- Cloud9orbust
66 GTO clone, 467 cubic inches of Turbocharged Multiport Fuel Injected fury twisting a TH400 into 3.90's wrapped in a 12 bolt posi.
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