Hi... I am going to do some moding to the 06 checkmate this winter.... My list right now is air filter, 17% supercharger pulley, gp intercooler, and i was going to go with a non-resonated cat-bak miltek. I was just curious is it worth putting a miltek header on also, or does it really not need a header for this setup. I am not going to do any engine work or ignition/tuning type things. Thanks