i would leave the gear, im wondering about your timming curve, and is that a 4500 series 1050? your car should run in the 120 mph range from watching my buds 416, 4.30 geared 28 in tall 3000 lb cuda, it runs 10.8os 120-123 mph. thats with a 750 witch i dont think is big enough.
His opening post says he is making the horse power, 555, and his 60 foot time is down. I guess we need more information, but more gear will build a fire under it.