Edelbrock has a new supercharger, E-Force that as stock puts out 5 lbs.of boost. Now they claim no valvetrain upgrade,no special bottom end work, and no compression ratio adjustments and it will run on 91 octane gas. It's use with a 800 cfm carb and its an Eaton postive displacement type that can be bolted on a stock engiine with no additional modifications. Has anyone tried one of these? Seems a little far fetched to me.