All oil leaked out

So my baby has been sitting dormant for about 2 years. After trying to get her going I found the fuel pump to be bad. I replaced the pump and she started right up. I let her idle for about 30 minutes when all of the sudden all the oil was in the driveway. No odd noises, no funny idle. I haven't had too much time to check it out because the car is lowered and I am trying to get my hands on some ramps. My question is where would u start. The oil didn't seem to be mixed. And it appeared to come from the front, passenger side of the motor.