http://mustangforums.com/m_2966762/tm.htm

that is with the same kit i am saving up for to get this summer (or i will get something similar if another turbo kit comes out). That car has 11's in it without a doubt. And there are multiple guys running 12-13 psi on the stock motors safely in daily drivers, and powerhouse the company that produces the setup is running i think close to 20 psi now on their 4.0 on the stock motor with multiple passes I'll probably go with about 8 psi just for that extra safety, but a manual with this kit on 9 psi made 370rwhp and 400rwtq, so 8 is damn fine for me. Can't wait to get my setup