I'm looking to build a 450-500hp 4.0L inline 6 on my 94 yj. i've already started to order things (small parts) such as a throttle body, tune up kit, and some other parts that needed to be replaced. i understand this isn't any easy feat and there isn't a whole lot of info out there on what i can really do to achieve this. so here i am. i was thinking about boosting the motor and as far as i know the stock motor can only hold up to 400hp on the stock rods before they'll eventually give. i also know on stock internals the motor can only support 8lbs of boost before it becomes too much on the internals. i'm wondering how much the motor would make at 8psi of boost and if i should expect a good return in power (i'm pretty sure it won't make 400hp at 8psi)