I'm sure it could be done but how reliably, I don't know. It would probably be pushing it. Maybe setting it up w/ two stages of tune, one street one track. w/ the stock engine being 10.5:1 cr I wouldn't want to be running the boost pressures needed for that car to be at 400whp on 93 octane. Maybe w/ a thicker head gasket and methanol injection. I'm really just talking out of my ass to give you a response. Someone will know for sure that can answer your question. I would think 300 on a stock block would be really damn good. Most bolt on kits that you can buy are only hitting 230-260whp. You would definately need something more than an FMU to tune properly to make 300+