no way man, take off the head for the love of god. go to your hardware store with one of your head bolts and get a helicoil set. comes with a tap, a helicoil driver and several helicoils for if you #$%* up the rest. try reusing your new head gasket, waddya got to loose? motor probably hasnt been started since the head was taken off, so it should be fine. if it runs bad do a compression test and maybe a combustion leak test (might wanna have a shop do that, don't pay too much, just tell em you think youve got a bad head gasket. but really a new headgasket can't be that much. might wanna tap and die the rest of your hardware so it doesnt happen again.
