Stu does not build engines as far as i am aware!The people that would build you a strong 500 bhp engines!you do not need a swedish inlet!Small turbo escos one or a 500 one will do it i woud would try too go with either of these as they are o.e!Also a T4 will give you 500 bhp!

I still say either

Tony turbosystems

Karl @ NMS

Reyland

Mark Shead MADevelopments