passenger side, a few inches above the bottom of the windshied, and a few inches in from the A-pillar(maybe 6-8 inches on each side, maybe more)
you can find the official mic placement of the different competition orgs on their websites //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
but "sealed on the dash" just means mic on the dash(see above) and all windows and doors closed.