Help with intake

hey guys, i know this is a mustang forum, but i have a 94 grand marquis beater/first car with 216,000 miles and the intake plenum gasket is leaking and its really aggravating when it stalls at red lights sometimes. so my question is do you guys have any tips on replacing the gasket? ive already replaced the tb gasket and i have a new one for that and the plenum, ive been told i should use gasket sealer. and do you guys know if it needs to be torqued to a certain spec?

thanks
Brandon