You will be fine on stock internals provided you get some sort of management (Hondata, AEM EMS, FAST), larger injectors and some good tuning. With that done you should be able to push 280whp safely. I would recommend a T3/T04E 50 trim with a .48 A/R turbine or if you have an extra $150.00 - $200.00 a Precision SC50.