Do you have a roll bar in the car? It is most likely closer to 3700 lbs with you in the car. You are most likely going to start out in the low 11's until you start to get it sorted out. But you should be able to get the car in the high 10's depending on how well you shift. The stick shift with 3.54 gears will hold you back. Where did you motor make peak horsepower?