I wouldn't use anything on the bolts. If anything, chase the threads down with a bottom tap and clean the blots with a hand held wire brush. Be sure the make sure the mounting seats and cheeks of the bolts are clean too.
Loctite is a is definite no no on exhaust bolts/studs.
Gone, out doing soft recreational past time with overpowered boat!
ALABAMA'S #1 BANDWAGON FAN!! AND DOESN'T WANT TO WAIT UNTIL 2014 TO PLAY THE ONE AND DONE CREW!!!