need some help (360)!400+hp

I agree with the others, this is one place where you should definitely look the gift horse in the mouth. Seems everyone now owns a 400+ HP 360 engine. I've built mine aiming for the 400 HP level, but I doubt very much that it's much over 350. To get to the 400 level I'll need to bring the stock compression up with some aftermarket pistons , and possibly have the heads cut to get the final compression I'll need. Unless he has a dyno sheet or some strip timing slips that are verifyably his, I'd be very skeptical about the 400 HP claim. Just my .02 cents.