9165pt0

i have a bad exhaust leak, tickin everytime i throttle. so i open the hood and see 1 of the header bolts backed out. but i cant seem 2 get anything around it to tighten it down. its a awkward fit. i cant fit a socket or wrench around it due to the bbk shorty header tube, theres not enuff clearence room btwn the head of the bolt and the header tube.
any suggestions on what i can use to tighten it back down?