Bet Seahawks +113
and
Bet Manning to Win MVP +115.
If Denver wins, Manning winning the MVP is almost a guaranteed lock. Yes, your winnings will be small (unless u risk huge money), but you cant expect more from what I think is the closest you can get to a "guaranteed" win regardless of outcome. That said, nothing is truly guaranteed so...careful. Those lines can be found @ BetOnline.
Best of luck!
Props to "No Limit" for originally bringing the MVP angle to my attention.