if you want just pure straight away speed than the H22 is the way to go. a stock H22 motor will run mid 12's 1/4 mile while a stock GSR will run mid 14's 1/4 with a good driver. i have a gsr in my hatch and it is quick but an H22 hatch will squash me. it really depends because if you want to boost your car i would say get a gsr but if you want just all motor definitely go with an H22.