hey mate, as said 330rwkw is round the limit of the smaller turbos. but beleive me 330rwkw with one of them is ALOT of fun! very quick onto full boost, quite hard to get any traction. great street turbo!! if I was in your boat and had a goal of 330rwkw, I would keep the factory turbo for the time being. put a 12lb actuator on it, full cooler kit, 100cpi cat with center muffler removed, x force 4"dump, shorten the inatke path (as your battery is not in the way) these mods above with your injectors will get you there or very close to your power goal. dont worry about doing your valve springs unless your tuner advises you to do so, some take 350rwkw some take a little less. same goes for the fuel system. with the dump, cat and turbo actuator now upgraded you should be able to push more boost quite safely. (round 14-16psi) haha but at the end of the day if you are wanting to push 350+ rwkw in the future maybe doing the turbo upgrade is a good idea.