yo juan my friends car made 220 with stock internals and it held up to 12 psi every day driven trust me my friend did it in his D16 he had it working right for about 6 months until he started shooting up nitrous.....the 75 shot blew it up in 3 runs then he went to forged internals, and now he is boosting 20 psi and 55 shot it worksout good he makes 600whp right now hes almost beating my camaro.... is sai..