The h series uses cables instead of rods for shift linkage. Alot heavier than a b series and more money to swap in. I would go with a b16b, its not in every other hatch and its got alot of power. so like 95 civic asked; what are you plans for this car. If your boosting then i would go with an ls motor. but if going all motor the best would be b16b. imo.