Hello all,

I have a 97 f150 w/ 4.6l, 4x4, s/c, 3.55:1, tow package with 125k miles. I tow a 18' boat w/ trailer (approx total weight 2300#) almost every weekend. The geography in which I live in is almost all hills. The engine has been great, but I would like to add some additional hp and torque. I already have a k&n air filter in it. I am considering buying a exhaust system (flowmaster or gibson not sure what would perform and sound better). Is there anything else that would all would recommend? Thanks for your input.