i belive i have come to the point that i will need to replace the exhaust manifolds... i am not looking for more power or more noise. just want to have a quite cab. when i drive on long trips. that loud droan from an exhaust is not fun after 500 miles and still have 1000 more to go. (i guess i am getting old so would it be cheaper to replace with stock or with aftermarket? i have read that it will take a full weekend. and a pint of blood for the busted knuckles.. so any input?