Ok. 304 Stainless is the worst idea ever for a turbo kit. look up threads on "why not to use cheap 304 stainless" sticky. It will crack alot. It may take 2 years for it to crack, but it will crack. and that sucks. On3performance is on there too, and he has been dogged from day one basically because he is a lying toolbox. His kits fit like crap, need alot of modification, and are mostly made in China. Having said that, they have steadily been working on improvements and new kits. Their customer service is pretty much horrible once they get your money. I hear a lot of stories that someone buys a kit and they say they will get it in 8 weeks. 4-6 months later, after 100 excuses they call their credit card company and cancel payment since they never got the kit. so basically save your money and buy a REAL turbo kit that is legit