I need to put in new exhaust manifold gaskets on my 392 this weekend. How much should I torque them down? Anything special I should look out for? Should I reuse the old nuts & bolts? Jim Camery '68 TAll '73 TAll '72 VW Convert '97 Saab 900 Turbo '56 Chris Craft 26' cruiser '64 Chris Craft 37' Constellation - room for more stuff, too -