At that price shouldn't it have ported heads maybe intake ? but if so you'd think it would be making over 500 hp especially with the high tq to cid. It seems to me be making the torque of a engine 30+ cid larger an the power of stock ish edlebrocks with a decent cam/cr. Plus peak power is pretty flat for about 1000 rpm and at low rpm like it's ran out of airflow.