As most max. speed limits down under are 100 - 110 kph on open high ways, which means in top gear you're only at 5-10% throttle in a car that weighs about 1200 kg (and 1 spare seat)-- so with that motor you can be assured of reliability and longevity, even with a bit of spirited exuberance.
Unless, you live in New Zealand, you'll probably need 500 hp + and a strong 2nd gear --just to get up all those hills --and with all that hp you'll need big brakes to slow down with, when coming down those big hills. :laugh::worried: