from what i hear about this engine it is very strong and has almost as much power as the tz. And it is pretty durable, maybe not as good as an os tz but the tz is also turbo cut. And at the time i didn't feel like getting new mounts so i got the 3.3. I don't plan to race oganized anyways. I just wanna beat my buddies RS4 with a Novarossi N12LL5 that he just got. I am sending it to dadders and they say this engine will come close to doubling in power with their full race mod. And with a tuned high rpm exhaust and motor saver intake i think i should have no problem along with a few suspension mods. And i mainly just wanna see how fast i can make this car go too.