i'd say that with ported heads/intake/cam that 49 will really wake up your car.you might still be ok on the street with the stock injectors(if they're clean)but in race trim you'll be running out of injector.i'd go with some 36# at least,or 42#.
the 307 pump will take you to at least low 11's.i'd get a hotwire kit too.
later,sean