How much would it be to install a Flowmaster muffler on a v6 2002 Mustang?

Just a ball-park figure of cost for the Flowmaster muffler itself and installation... I'm assuming it would be flowmaster 40's.. I'm not sure yet, i need to research more, lol...|||About 80 bucks for the muffler plus labor some times you can find them lower price but not often The sad thing about them is they do not give muffler shops any better price on them than you can buy it for A really good sub is a FULL BOAR they sound the same cost less I use them on my trucks one has been in use for 5 years on a 03 F 150 with no tone change or rusting DO NOT buy the ones from auto zone Thrush brand they will rust out in about a year or so !!! Are you going to install it your self ?? labor can be high at a shop Wile you are at it have the cats tested make sure they are flowing good on the F150 4.2 liter theres 3 on the damn thing !! The EPA makes the auto maker take care of emissions equipment for 80K miles so keep that in mind .if u find one bad .