The turbo will hit its limit before the engine mate

Get a stage 2 or stage 3 turbo and the Siemens injectors with your ofam and you will have a nice 200/220bhp

You will need a up rated clutch too

240bhp I would say is the limit, and to be honest if I was going for the hybrid turbo I would get a Newman phase 4 cam, double valve springs and solid lifters


Although I think a totally stock engine with ofam, injectors and stock rst t3 with -31 actuator and fmic will get around 200bhp and drive brilliant