Drink more gas? I understand a bigger engine needs more fuel, however it may be that the H required premium fuel whereas the D and B require regular. Even though people say you can use regular 87 unleaded in the H, I always used Premium. Just can't beat that torque straight from stock. B16C5's are still going for $2400 to $4000 today. You can get a H22 for under a grand at JHOT I know.