You can run low boost like 8 psi on stock internals but for anything higher you would want to build the bottom end up with forged internals. If you use the search function on here you can find a ton of posts on just that subject. Also using the search will keep the board from getting cluttered with multiple posts over the same subject. Not trying to say no one will help but I have found most my questions have been answered just doing the research on it before I ask. Also will keep people from coming on and telling you to search more . The site is full of information on here and the wikki has lots of useful articles on just this subject. Hope you find the answers your looking for.