11 sec daily driven all motor...

I doubt that an electric fan & waterpump would knock off 3-4 tenths off your 1/4 mile time. That's being a little optimistic. No the E-303 cam will not get you into the 11s without a power adder like nitrous or a supercharger. I'd take the advice "ERStettin" gave you and get your heads & intake ported by a reputable shop. The custom grind cam sounds like the way to go too. Good luck with your combo. Let us know the outcome.