the only thing i can think of for emissions and this is not even 100% but you can start with a Edelbrock kit and upgrade the fuel management, ems, downpipe and turbo to a GT2871R which is 450whp capable. Now by doing this the kit is no longer street legal but it may appear to be to some people and my be enough to pass a visual test, weather or not you will pass your states actually emissions testing is another story. I suggest you speak to a local tuner about your options as it is mostly in the tune.