You mean a EG with a b18b vs. an EG with a z6? I guess it all depends on the circumstances of the race. The D series have better gearing than LS tranny so they may pull in the beginning, but the b18b equiptd car will definitely pull back and pull away. In my Integra LS i raced a friend in his EJ with a mini-me swap. He pulled at the beginning, but ran out of gears. By the end of third gear i was about a fender on him...the rest was history.