Joey, you COULD bend those covers as they're made out of sheet stock, but you'd probably warp them doing so and they'd leak all over those nice, new headers. How much clearance is req'd? Could you bolt the headers to the head and using a wide lever, like an old spring leaf, wow the #2 pipe enough to do the job? Think about what ever you do, because the chance of warpage is everpresent. Good luck!