I understand that the 1.5 way works under load and the 2 way works even when de-accelerating. Does that make a big difference on the street?? We are talking a street car, not for drifting or race track etc. Ive spent a decent amount on parts (A14) these last few week and aiming over 100+ hp, hopefully with some torque as well. It's a H165 diff. also chasing 3.7 ratio to suit !!