an unopened b30 can take up to roughly 600whp on corn juice. if you still wanna open the motor up, might as well upgrade rods and pistons and shoot for 800+whpI wouldn't worry about it if I was going to keep it stock but I was thinking I would lower the compression, change the fuel system, run e85 and turbo it. I have my old Subaru to daily if I have issues but I would like it to be semi reliable after all of that.