Got a 2009 6.2 AWD Denali about 3 or 4 months ago. loving it so far. 6.2/6l80e is great. Im getting a spintech tomorrow, eventually will do Airraid tube and a good filter, eventually i want to do headers, what is recommended for best fit/price on headers for the AWD 6.2? I hear ARH but they're so expensive lol.