power will be around 310bhp-330bhp with the intercooler and t34,but also depends on what boost set at,22-25psi.
Next stage is blue injectors and more boost around 28psi and proberbly different cams but should see 360bhp-380bhp .A decent head gasket will be needed and some tuners say to long stud the block at this stage.

These figures do vary but think 330bhp will be enough for the time being

Go with a tuner that you trust and go with there advice,different tuners have different opitions tho