Ok, So for my star trek reference I am referring to rear end gears. I took my car out yesterday for a cruise yesterday and I get that the car is a 1933 Dodge 3 speed flat head 6. but I was expecting to at least get to 45-50 mph. well I am curious what I should do to get this car moving a bit faster. I am curious if I am able to change the gears in the rear end. is this a possibility? who sells rear end gears for these old cars.