I don't think the gearing will be too bad. What diameter tire does your car have ? I assume around 26 ". My 5,200 # truck came from the factory with a 31" tire 3.73 gears and a 700R4 with a 305. The wheel speeds work out about the same.
What are you running for an exhaust on the car ? Does it have manifolds and a catylytic converter or ? Is it still the stock intake ? What do you want the vehicle to do ?